Bose QuietComfort Ultra Earbuds (2. nesil) / Sennheiser MOMENTUM True Wireless 4

Bose QuietComfort Ultra Earbuds (2. nesil): True wireless in-ear · wireless charging case

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.

SpecificationBose QuietComfort Ultra Earbuds (2. nesil)Sennheiser MOMENTUM True Wireless 4
Release year20252024
TypeIn-ear true wireless earbuds BoseTrue 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
Noise cancellingAdaptive active noise cancelling (ANC) · Aware (ambient) mode

ANC picks up outside sound with microphones and cancels it with an opposing signal. Bose says this generation changes cancellation levels more smoothly when sudden noises occur.

Bose		—
Microphones4 microphones per earbud · AI-powered call noise suppression Bose3 MEMS microphones per earbud (6 in total), beamforming noise reduction; 100 Hz–10 kHz Sennheiser
MultipointTwo source devices at once Bose—
BluetoothBluetooth 5.3 · range up to 9 m

Bose states the earbuds do not receive LE Audio content.

Bose		—
CodecsSBC, AAC, aptX Adaptive (Snapdragon Sound)

aptX Adaptive adjusts quality and latency to connection strength; the phone must also support this codec.

Bose		—
BatteryEarbuds up to 6 hours (4 hours with Immersive Audio on) · up to 24 hours in total with the case

Immersive Audio is Bose's spatial audio mode and shortens battery life.

Bose		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
ChargingUSB-C · wireless charging case · up to 2 hours of use from a 20-minute charge

The earbuds take about 2 hours and the case about 3 hours to charge fully.

Bose		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
Water resistanceEarbuds IPX4 · case not water resistant

IPX4 is protection against splashing water, not against immersion.

Bose		—
Weight0.017 lb (about 7.7 g) per earbud · case 0.132 lb (about 60 g) Bose—
DimensionsEarbud 2.99 × 1.25 × 2.49 cm · case 6.63 × 5.97 × 2.69 cm Bose—
ColoursBlack, White Smoke, limited-edition Deep Plum Bose—
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
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