Samsung Galaxy Buds3 FE (SM-R420) / Sennheiser MOMENTUM True Wireless 4

Samsung Galaxy Buds3 FE (SM-R420): Galaxy Buds3 FE, SM-R420 (2025); Black and Gray. Sealed in-ear design with silicone tips. The tipless semi-open Galaxy Buds3, the Buds3 Pro and the original 2023 Galaxy Buds FE are separate models.

Sennheiser MOMENTUM True Wireless 4: MOMENTUM True Wireless 4 (2024); Black Graphite 700365, White Silver 700366, Black Copper 700367 (Denim and Gold were added later). The over-ear MOMENTUM 4 Wireless and the in-ear MOMENTUM True Wireless 3/5 are separate models.

SpecificationSamsung Galaxy Buds3 FE (SM-R420)Sennheiser MOMENTUM True Wireless 4
Release year20252024
Design and fitSealed in-ear design, silicone tips (three sizes), stem body; earbud 18.0 × 21.1 × 33.8 mm, 5 g (with M tip); case 58.9 × 48.7 × 24.4 mm, 41.8 g

Silicone tips seal the ear canal, blocking outside sound passively and helping bass sound fuller; if the tip does not seal, noise cancelling and bass both weaken.

Samsung		—
Driver and microphones1-way dynamic driver; 3 microphones per earbud Samsung—
Noise controlActive noise cancelling (ANC) and ambient sound

ANC uses microphones to detect outside sound and plays inverted sound to reduce steady noise such as engines and hum. Ambient sound lets you hear your surroundings without removing the earbuds. Adaptive ANC that adjusts to the environment is not listed for this model.

Samsung		—
Connectivity and codecsBluetooth 5.4, Auto Switch; SSC (Samsung Seamless Codec), AAC, SBC

SSC is Samsung’s own codec for higher-quality audio with Galaxy devices; other phones use AAC or SBC. Auto Switch moves the connection automatically between Galaxy devices on the same account.

Samsung		—
BatteryEarbud 53 mAh, case 515 mAh (typical); music: 6 h / 24 h total with ANC on, 8.5 h / 30 h total with ANC off; talk: 4 h / 18 h total

Samsung’s times come from internal tests with pre-production units and default settings; rated capacity is 50 mAh per earbud and 500 mAh for the case. Real runtime depends on volume, codec and battery age.

Samsung		Up to 7.5 hours per charge (ANC off) / up to 7 hours (ANC on); up to 30 hours total with the case; lithium-ion, 75 mAh per earbud, 820 mAh case

Times were measured with an iPhone at medium volume (85 dB). According to Sennheiser, 8 minutes of charging gives about 1 hour of playback; the battery protect mode in the app slows charging and slightly lowers maximum capacity to extend battery lifespan.

Sennheiser
Sensors and controlsProximity, Hall, touch and pressure sensors; pinch/swipe controls on the stem Samsung—
Water resistanceIP54 (earbuds only)

IP54 means limited dust protection and resistance to splashing water from any direction; it is not suitable for submersion. The charging case is not protected.

Samsung		—
CompatibilityAndroid 11 or later with more than 1.5 GB of RAM

Samsung notes some features may be unavailable on non-Samsung devices. Equaliser, ANC settings and AI features are managed in the Galaxy Wearable app or One UI settings.

Samsung		—
Type—True wireless stereo in-ear earbuds; ear-canal fit with ear fins

The box includes four sets of ear tips (XS/S/M/L) and three sets of ear fins (S/M/L).

Sennheiser
Driver—TrueResponse dynamic, 7 mm; 5 Hz–21 kHz; 107 dB SPL (1 kHz / 1 mW)

According to Sennheiser, audio resolution up to 24-bit/96 kHz is supported with a compatible source.

Sennheiser
Noise cancellation—Hybrid ANC, adaptive to surroundings; Transparency Mode

Adaptive mode sets the cancellation level automatically for the surrounding noise; Transparency Mode lets outside sound in without removing the earbuds.

Sennheiser
Bluetooth and codecs—Bluetooth 5.4 (Classic and LE Audio); SBC, AAC, aptX, aptX Adaptive/Lossless, LC3; A2DP, AVRCP, HFP, TMAP, PBP

aptX Lossless needs a Snapdragon Sound phone that supports it; an iPhone uses AAC. According to Sennheiser, Auracast broadcast listening only arrives through a firmware update. Multipoint lets it switch between two devices.

Sennheiser
Microphones—3 MEMS microphones per earbud (6 in total), beamforming noise reduction; 100 Hz–10 kHz Sennheiser
Charging—USB-C socket on the case (5 V, 1,000 mA max) and Qi wireless charging

A USB-C cable is in the box; there is no adapter.

Sennheiser
Durability—IP54 dust and splash resistance (earbuds only)

The charging case is not covered by the IP rating.

Sennheiser
Weight and size—Single earbud 6.2 g; case 66.4 g; total 72.4 g; 70.1 × 44.6 × 34.8 mm with the case Sennheiser
App—Sennheiser Smart Control for iOS and Android: 5-band EQ, Sound Personalization, Sound Zones, touch control settings

Sound Personalization was developed with Fraunhofer IDMT and builds a sound profile from the user’s reactions to sample sounds.

Sennheiser
Operating conditions—Operating 0 to +40 °C; charging 5 to 35 °C Sennheiser