Off-White · 910-007120 · UK manufacturer configuration
The Logitech M240 Silent is a compact, ambidextrous Bluetooth mouse with SilentTouch quiet clicks, three buttons and up to 18 months from one AA battery.
Specifications checked 27 Sept 2026.
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Manufacturer specificationsChoose the Logitech M240 Silent Bluetooth Mouse for
Choose the Razer DeathAdder Essential for
Black · RZ01-03850100-R3M1 · UK manufacturer configuration
The DeathAdder Essential is Razer's entry-level wired right-handed ergonomic mouse: 96 g, a 6,400 DPI optical sensor, five programmable buttons and mechanical switches rated for 10 million clicks.
Specifications checked 26 Sept 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
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Differences first. Select a topic for its graphic, sources and conditions.
Check the exact configuration and source conditions for your use.
Manufacturer specification · Logitech says it pairs over Bluetooth with no dongle or port required.
Manufacturer specification · Original manufacturer description: Wired (standard cable). Wired only; Razer lists no wireless mode or battery. The connector type is not stated on these pages. Shared wired availability is comparable. Manufacturer cable and connector details retain their own scope; no unlisted connector is inferred.
Choose the grip, then check the connection. Left-side thumb controls are not a mirrored left-handed layout. Check the receiver or USB connection, battery requirements and your preferred shape. DPI is tracking resolution, not an accuracy score; no gaming winner is inferred.
8 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.
Manufacturer specification · Logitech says it pairs over Bluetooth with no dongle or port required.
Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageLogitech M240 Silent Bluetooth Mouse — Logitech US product pageSpecification - M240 — Logitech SupportManufacturer specification · Original manufacturer description: Wired (standard cable). Wired only; Razer lists no wireless mode or battery. The connector type is not stated on these pages. Shared wired availability is comparable. Manufacturer cable and connector details retain their own scope; no unlisted connector is inferred.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Logitech lists 3 buttons (left/right click and middle click) plus a connectivity button.
Specification - M240 — Logitech SupportManufacturer specification · Razer lists 5 independently programmable Hyperesponse buttons.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overviewPhysical clicks, programmable wheel actions and optional side buttons can produce different counts. Read each configuration; a larger count does not establish better control or programmability.
Manufacturer specification · Logitech says the M240 Silent is designed to be equally comfortable for left- and right-handed users; it has no side buttons. Not a grip or comfort test.
Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageLogitech M240 Silent Bluetooth Mouse — Logitech US product pageManufacturer specification · Razer's stated form factor; side-button position from the official product views. Not a grip or comfort test.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overviewCheck the exact configuration and source conditions for your use.
Manufacturer specification · Logitech's listed height (front-to-back in its top-view convention).
Specification - M240 — Logitech SupportManufacturer specification · Mouse body length; cable excluded.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsCheck the exact configuration and source conditions for your use.
Manufacturer specification
Specification - M240 — Logitech SupportManufacturer specification · Razer does not state the material.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Adjustable in steps of 100 DPI, per Logitech.
Specification - M240 — Logitech SupportManufacturer specification
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsSensor settings and manufacturer tracking limits describe capabilities, not independently measured accuracy or gaming performance. Preserve each test surface and software condition.
Manufacturer specification · Overall width, not grip width.
Specification - M240 — Logitech SupportManufacturer specification · Razer's listed width; Razer does not state the measurement basis.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsA size or weight trade-off; it does not establish the better product.
Manufacturer specification · Logitech lists height 99 mm, width 60 mm and depth 39 mm; as in other Logitech records in this catalogue, Logitech's height is the front-to-back length and its depth is the mouse's height.
Specification - M240 — Logitech SupportManufacturer specification · Mouse body as listed by Razer; cable excluded.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsA size or weight trade-off; it does not establish the better product.
No source recorded for this side.
Manufacturer specification
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overviewEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification
Specification - M240 — Logitech SupportThe individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overviewEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · Logitech gives the Bluetooth report rate as 88–133 Hz (7.5–11.25 ms).
Specification - M240 — Logitech SupportRazer does not list a polling rate for this model. · Manufacturer specification · Neither the tech specs nor the overview state a report rate.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Razer lists no onboard memory profiles.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification
Specification - M240 — Logitech SupportNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · Logitech's rating with auto sleep; test conditions are not stated.
Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageSpecification - M240 — Logitech SupportNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Razer lists a standard cable, 1.8 m.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · Logitech's OS/platform support at release; its system requirements also list Windows 7 and 8, macOS 10.10 or later and Android 5.0 or later.
Specification - M240 — Logitech SupportNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · Manufacturer box contents; no receiver is included. Check the seller's listing.
Specification - M240 — Logitech SupportNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · Logitech's claim: 90% noise reduction on left/right and middle clicks compared with the Logitech M185; left-click dBA level measured by an independent lab at 1 m (product-page specifications).
Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageLogitech M240 Silent Bluetooth Mouse — Logitech US product pageNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · Logitech lists 400 – 4000 DPI in steps of 100.
Specification - M240 — Logitech SupportRazer does not list a minimum sensitivity for this model. · Manufacturer specification · Razer lists only the 6,400 DPI maximum.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Razer's lifecycle rating for the mechanical switches.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Razer's maximum acceleration rating; test surface not stated.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Razer's maximum speed rating; test surface not stated.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · With the AA battery, per Logitech; 50.7 g without battery.
Specification - M240 — Logitech SupportManufacturer specification · Manufacturer-listed weight; Razer does not state whether the cable is included.
Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specsThe manufacturer sources do not establish the same cable weighing basis. Both published masses remain visible with their conditions, but are not ranked.
Manufacturer specification
Specification - M240 — Logitech SupportNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
1 shared field has the same recorded value.
| Specification | Logitech M240 Silent Bluetooth Mouse | Razer DeathAdder Essential |
|---|---|---|
WeightDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · With the AA battery, per Logitech; 50.7 g without battery. Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Manufacturer-listed weight; Razer does not state whether the cable is included. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | 73.8 g | 96 g |
Weight without battery SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification Specification - M240 — Logitech SupportRazer DeathAdder Essential No source recorded. | 50.7 g | Not provided |
DimensionsDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech lists height 99 mm, width 60 mm and depth 39 mm; as in other Logitech records in this catalogue, Logitech's height is the front-to-back length and its depth is the mouse's height. Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Mouse body as listed by Razer; cable excluded. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | 99 × 60 × 39 mm (length × width × height) | 127.3 × 72.7 × 42.8 mm (length × width × height) |
Body lengthDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech's listed height (front-to-back in its top-view convention). Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Mouse body length; cable excluded. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | 99 mm | 127.3 mm |
Body widthDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Overall width, not grip width. Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Razer's listed width; Razer does not state the measurement basis. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | 60 mm | 72.7 mm |
Hand orientationDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech says the M240 Silent is designed to be equally comfortable for left- and right-handed users; it has no side buttons. Not a grip or comfort test. Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageLogitech M240 Silent Bluetooth Mouse — Logitech US product pageRazer DeathAdder Essential Manufacturer specification · Razer's stated form factor; side-button position from the official product views. Not a grip or comfort test. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview | Ambidextrous | Right-handed ergonomic shape; side buttons on the left |
Glide feetDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Razer does not state the material. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | PTFE (rated for a 250 km range) | Standard stock feet |
Tracking method SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech lists the sensor as "Tcob, Smooth optical tracking"; no sensor model is named. Original manufacturer description: Smooth optical tracking. This identifies optical tracking, not a named sensor model. Model-specific hardware, accuracy and performance are not inferred. Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Razer names the sensor only as optical; no model is given. Original manufacturer description: 6,400 DPI optical sensor. This identifies optical tracking, not a named sensor model. Model-specific hardware, accuracy and performance are not inferred. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview | Optical | Optical |
Maximum tracking resolutionDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Adjustable in steps of 100 DPI, per Logitech. Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | 4000 DPI | 6400 DPI |
Minimum sensitivity SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech lists 400 – 4000 DPI in steps of 100. Specification - M240 — Logitech SupportRazer DeathAdder Essential Razer does not list a minimum sensitivity for this model. · Manufacturer specification · Razer lists only the 6,400 DPI maximum. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | 400 DPI | Not provided |
Maximum report rate (Bluetooth) SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech gives the Bluetooth report rate as 88–133 Hz (7.5–11.25 ms). Specification - M240 — Logitech SupportRazer DeathAdder Essential Razer does not list a polling rate for this model. · Manufacturer specification · Neither the tech specs nor the overview state a report rate. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | 133 Hz | Not provided |
Published tracking speed SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification · Razer's maximum speed rating; test surface not stated. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | Not provided | 220 IPS |
Published acceleration threshold SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification · Razer's maximum acceleration rating; test surface not stated. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | Not provided | 30 G |
Listed controlsDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech lists 3 buttons (left/right click and middle click) plus a connectivity button. Specification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Razer lists 5 independently programmable Hyperesponse buttons. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview | 3 | 5 |
Main switch technology SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview | Not provided | Razer Mechanical Switches |
Claimed main-switch durability SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification · Razer's lifecycle rating for the mechanical switches. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | Not provided | 10 million clicks |
Scroll controls SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs | Not provided | Standard scroll wheel; no tilt-click |
ConnectionsDifferent SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech says it pairs over Bluetooth with no dongle or port required. Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageLogitech M240 Silent Bluetooth Mouse — Logitech US product pageSpecification - M240 — Logitech SupportRazer DeathAdder Essential Manufacturer specification · Original manufacturer description: Wired (standard cable). Wired only; Razer lists no wireless mode or battery. The connector type is not stated on these pages. Shared wired availability is comparable. Manufacturer cable and connector details retain their own scope; no unlisted connector is inferred. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | Bluetooth Low Energy; compatible with a Logi Bolt receiver (not included) | Wired |
Battery SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech's rating with auto sleep; test conditions are not stated. Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageSpecification - M240 — Logitech SupportRazer DeathAdder Essential No source recorded. | 1 × AA (pre-installed); up to 18 months | Not provided |
Cable length SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification · Razer lists a standard cable, 1.8 m. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | Not provided | 1.8 m |
Customisation software SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification Specification - M240 — Logitech SupportRazer DeathAdder Essential No source recorded. | Logi Options+ (Windows 10, 11 or later and macOS 11 or later) | Not provided |
Onboard memory SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification · Razer lists no onboard memory profiles. Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | Not provided | No |
Lighting SourcesLogitech M240 Silent Bluetooth Mouse No source recorded. Razer DeathAdder Essential Manufacturer specification Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs | Not provided | Single-colour green lighting; no RGB |
Click noise SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech's claim: 90% noise reduction on left/right and middle clicks compared with the Logitech M185; left-click dBA level measured by an independent lab at 1 m (product-page specifications). Logitech M240 Silent Bluetooth Mouse — Logitech UK product pageLogitech M240 Silent Bluetooth Mouse — Logitech US product pageRazer DeathAdder Essential No source recorded. | SilentTouch: 90% less click sound | Not provided |
Listed compatibility SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Logitech's OS/platform support at release; its system requirements also list Windows 7 and 8, macOS 10.10 or later and Android 5.0 or later. Specification - M240 — Logitech SupportRazer DeathAdder Essential No source recorded. | Windows 10, 11 or later; macOS 11 or later; iPadOS 14 or later; ChromeOS; Linux; Works with Surface; Android 9.0 or later | Not provided |
Listed package SourcesLogitech M240 Silent Bluetooth Mouse Manufacturer specification · Manufacturer box contents; no receiver is included. Check the seller's listing. Specification - M240 — Logitech SupportRazer DeathAdder Essential No source recorded. | Mouse; 1 AA battery (pre-installed); user documentation | Not provided |
Sensor model SourcesLogitech M240 Silent Bluetooth Mouse The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification Specification - M240 — Logitech SupportRazer DeathAdder Essential The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview | Not listed by the manufacturer | Not listed by the manufacturer |
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Closest mice to this pair by shared key specifications. Not a popularity ranking.
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.
