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

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

Sennheiser MOMENTUM 4 Wireless: MOMENTUM 4 Wireless over-ear wireless headphones; Black (509266), White (509267), Graphite (700383) and later Brown, Teal, Copper and Denim colours. MOMENTUM True Wireless in-ear models and MOMENTUM 3 Wireless are separate products.

SpecificationBose QuietComfort Ultra Earbuds (2. nesil)Sennheiser MOMENTUM 4 Wireless
Release year20252022
TypeIn-ear true wireless earbuds BoseAround-ear, closed-back, wireless; active noise cancelling

The ear pads fully surround the ear; Sennheiser cites a lightweight design, padded headband and deep cushioned earpads for long-wear comfort.

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 Bose—
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		—
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		—
Water resistanceEarbuds IPX4 · case not water resistant

IPX4 is protection against splashing water, not against immersion.

Bose		No IP rating listed

With no certification against sweat or rain, care is needed when it gets wet during exercise.

Sennheiser
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 and frequency response—42 mm dynamic driver; 6 Hz–22 kHz; 106 dB SPL (1 kHz / 0 dB FS)

The frequency range describes measurement limits; the sound you hear is also shaped by the in-app equaliser and sound personalisation.

Sennheiser
Impedance—Active 470 Ω, passive 60 Ω Sennheiser
Noise cancelling and microphones—Adaptive hybrid ANC; 4 microphones in total (2 per side, MEMS, beamforming; 50 Hz–10 kHz); anti-wind mode; transparency mode

Hybrid ANC uses both outer and inner microphones; adaptive mode changes the level of cancellation to match ambient noise.

Sennheiser
Bluetooth and codecs—Bluetooth 5.2, Class 1; A2DP, AVRCP, HFP; SBC, AAC, aptX and aptX Adaptive

aptX Adaptive works only with Android phones that support it; iPhones use AAC. Multipoint connections are managed in the app.

Sennheiser
Battery and charging—700 mAh lithium-ion; up to 60 hours with noise cancelling on; full charge in about 2 hours; up to 4 hours from 5 minutes of charging; USB-C 5 V 800 mA

Sennheiser says the 60 hours was measured with an iPhone at medium volume; higher volume and aptX Adaptive can shorten it.

Sennheiser
Wired use—Hi-res digital audio over USB-C; 3.5 mm / 2.5 mm analogue cable

When listening over USB-C, the headphones decode digital audio internally; the analogue cable works even with a flat battery.

Sennheiser
Controls and app—Touch surface on the right cup; Smart Pause wear detection; Auto On/Off; 5-band equaliser and Sound Personalization in the Smart Control app

Smart Pause stops playback when the headphones are taken off and resumes when they are put back on; Auto On/Off shuts them down to save power when not in use.

Sennheiser
In the box—Carry case; USB-C charging cable; audio cable with 3.5 mm and 2.5 mm jacks; airplane adapter Sennheiser