Black · UK · Samsung part SM-R540NZKAEUB
Galaxy Buds4 (SM-R540NZKAEUB in black for the UK, SM-R540NZKAXAR in the US) are Samsung's open-type true wireless earbuds without ear tips (Samsung says the design does not seal the ear), with adaptive active noise cancellation, six microphones and Bluetooth 6.1 with LE Audio. Samsung rates them at up to 5 hours of music with ANC on and 24 hours with the case.
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Specifications checked 26 Sept 2026Manufacturer specifications, not a hands-on test.
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Sennheiser HD 650508825 · titanium-silver · 300 ohm · standard 3 m unbalanced cableAt 4.6 g per earbud they are lighter than Galaxy Buds4 Pro (5.1 g) and keep Bluetooth 6.1, LE Audio and SSC-UHQ codec support; their Adaptive ANC is Samsung's version 1.0 (pre-trained algorithms), while the Pro has Adaptive ANC 2.0 with real-time processing.
Rated for up to 30 hours of total music playback with ANC off, and the case can be charged wirelessly.
No ear tips are supplied: Samsung describes an open-type design that does not seal the ear. Samsung lists a 1-way driver with a single amplifier and an IP54 rating, against the Pro's 2-way speaker and IP57.
The Galaxy Wearable app is not supported on iOS, and neither a USB-C cable nor a wireless charging pad is included.
Exact configuration: SM-R540NZKAEUB · Black · UK
21 specifications in 5 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Samsung: 'Galaxy Buds4 do not have silicone ear tips. They feature a new open-type design that does not seal the ear, allowing for greater surround awareness.' The box holds the earbuds, the Charging Case and the Quick Start Guide; no USB Type-C cable is included.
Each earbud (30.5 x 18.3 x 19.3 mm). The charging case weighs 45.1 g (51 x 28.3 x 51 mm).
SourceSamsung (US): 'only earbuds are IP54 rated for water resistance'; IP54 is described as protection against dust and water splashes.
No USB Type-C cable is included and the wireless charging pad is sold separately; Samsung does not name the case's wired charging port on these pages. Charging power 2.5 to 4.5 W. Galaxy devices on One UI 8.0 or later use the phone's settings; earlier One UI and other Android phones use the Galaxy Wearable app (Android 12.0 or above, at least 1.5 GB memory). On non-Samsung Android with the app, Samsung lists HD Voice, 24-bit/96 kHz audio, 360 Audio, Bixby and Gemini voice wake-up, Interpreter/Live Translate, Head Gestures and Gaming Mode as unavailable; iOS devices and PCs connect over Bluetooth only (16-bit/44 kHz audio, standard call quality, ANC and Ambient mode).
Samsung's rated figures; actual battery life may vary with usage conditions, settings, number of charges, Bluetooth signal strength and other factors. Earbud battery 45 mAh, case 515 mAh (typical). The Samsung US comparison table gives the same 5.0/24 h (ANC on) and 6.0/30 h (ANC off) play times.
SSC-UHQ (24-bit / 96 kHz) is off by default and available on listed Galaxy S, Z and Tab devices with One UI 6.1.1 or above. LC3 is used over LE Audio, which the paired device must support.
Moves audio between Samsung Galaxy devices: Galaxy Book with One UI 6.0 Book or later, Galaxy smartphones and Galaxy Tab with One UI 4.1.1 or later, and Galaxy Watch4 series or later, logged in to the same Samsung Account. With Samsung TVs (launched Feb 2022 or later, after a July 2022 firmware update) it only covers phone calls.
Only available on Samsung Galaxy smartphones and Galaxy Tab devices with One UI 3.1 or later and selected Samsung TV models; support for 360 Audio and head tracking may vary by application and content. Not available on non-Samsung Android, iOS or PCs.
Active Noise Cancellation, Adaptive ANC, Adaptive Noise Control and Ambient Sound. Samsung: Buds4 feature Adaptive ANC 1.0 based on pre-trained algorithms, while Adaptive ANC 2.0 with real-time processing is only on Galaxy Buds4 Pro. Adaptive Noise Control is off by default.
Each earbud contains three microphones (six in total), plus a VPU (voice pick-up unit). Super Clear Call (HD Voice) isolates the voice with DNN processing and uses Super Wideband up to 16 kHz on listed Galaxy devices with One UI 6.1.1 or above; SWB may not be supported depending on the mobile network.
Off by default; set in the phone settings of paired Galaxy devices running One UI 8.5 and later.
Pinch and hold can be customised in the phone settings or the Wear app, where applicable. Samsung also lists Bixby Voice Wake-up (off by default).
Interpreter needs a smartphone with Galaxy AI features on One UI 6.1.1 or later; availability varies by device model, and a Samsung Account login may be required.
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