Logitech M240 Silent Bluetooth Mouse

The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately.

Adjustable in steps of 100 DPI, per Logitech.

Logitech gives the Bluetooth report rate as 88–133 Hz (7.5–11.25 ms).

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.

Logitech lists 400 – 4000 DPI in steps of 100.

With the AA battery, per Logitech; 50.7 g without battery.

Logitech's listed height (front-to-back in its top-view convention).

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.

Overall width, not grip width.

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 lists 3 buttons (left/right click and middle click) plus a connectivity button.

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 says it pairs over Bluetooth with no dongle or port required.

Logitech's rating with auto sleep; test conditions are not stated.

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.

Manufacturer box contents; no receiver is included. Check the seller's listing.