Sennheiser MOMENTUM True Wireless 5 / Sony ULT WEAR (WH-ULT900N)

Sennheiser MOMENTUM True Wireless 5: MTW5 · Graphite · MTW5 L / R earbuds and MTW5 C case

Sony ULT WEAR (WH-ULT900N): WH-ULT900N (printed code YY2981) closed over-ear wireless headphones; Black, Off-White, Forest Gray. ULT FIELD speakers and the WH-1000X series are separate products.

SpecificationSennheiser MOMENTUM True Wireless 5Sony ULT WEAR (WH-ULT900N)
Release year20262024
Announcement / availability20 August / 3 September 2026 Sennheiser—
Design / driverIn-ear; 7 mm dynamic TrueResponse Sennheiser—
Bluetooth6.0; two active connections Sennheiser—
Audio codecsSBC, AAC, aptX, aptX Adaptive / Lossless Sennheiser—
Audio modesHi-Res: 24-bit/96 kHz; Lossless: 16-bit/44.1 kHz

Requires compatible source and app selection; these are different transmission modes.

Sennheiser		—
Noise controlHybrid adaptive ANC, wind reduction, transparency Sennheiser—
MicrophonesFour per earbud, including bone-conduction microphone Sennheiser—
PlaybackUp to 12 hours ANC off / 6 on; up to 40 hours with case

iPhone, medium volume; actual conditions affect endurance.

Sennheiser		—
Battery replacementUser-replaceable earbud and case batteries Sennheiser—
ChargingUSB-C 5 V/1 A; Qi 2.1 Sennheiser—
Charge timeAbout 1.5 hours; 8-minute charge for 1 hour of music Sennheiser—
ProtectionIP54 for earbuds only Sennheiser—
WeightAbout 7 g per earbud; case 55 g; total 69 g Sennheiser—
Case size67.2 × 48.4 × 25 mm Sennheiser—
AppSmart Control Plus; iOS / Android Sennheiser—
LE Audio / AuracastListed as future firmware features in manufacturer FAQ Sennheiser—
Noise cancelling—Digital active noise cancelling with Integrated Processor V1 and Dual Noise Sensor; Ambient Sound mode

Two mics on each cup sample outside noise and the processor generates an inverse signal; Ambient Sound mode lets you hear announcements and speech without removing the headphones.

Sony
Driver and ULT button—40 mm dome-type closed dynamic driver with neodymium magnet; ULT button for bass-heavy sound mode

The ULT button switches to a strong bass setting with one press; the app equaliser can tune the sound further.

Sony
Frequency response—5–20,000 Hz (JEITA, wired); 20–20,000 Hz over Bluetooth (44.1 kHz sampling) Sony
Bluetooth and codecs—Bluetooth 5.2; A2DP, AVRCP, HFP, HSP; SBC, AAC, LDAC; about 10 m range

LDAC carries audio at a higher bitrate from Android devices; iPhones do not support LDAC and use AAC.

Sony
Multipoint and sensor—Two Bluetooth devices at once; wear sensor (pauses music when removed)

You can switch between a phone and a computer without re-pairing.

Sony
Battery—Music up to 30 hours ANC on, 50 hours off; calls up to 30 hours ANC on, 40 hours off; about 3.5 hours to charge over USB Sony
Wired use—Detachable single-sided cable of about 1.2 m, gold-plated L-shaped 3.5 mm plug; passive operation supported

When the battery is flat you can keep listening over the cable; audio over USB-C is not listed.

Sony
Microphone and processing—Electret condenser, omnidirectional microphone; DSEE

DSEE tries to restore high frequencies lost in compressed music.

Sony
Impedance and sensitivity—314 Ω on, 32 Ω off (1 kHz); 110 dB/mW on, 100 dB/mW off (wired) Sony
Weight and colours—About 255 g; Black, Off-White, Forest Gray Sony
In the box—Connection cable, USB cable, reference guide, warranty card Sony
Service program—Free repair until 31 January 2027 for cracks in the rotating shaft between headband and housing on specific serial numbers

The serial number is printed inside the left hanger; Sony provides affected ranges and a checker per colour. The crack can cause the housing to detach. Ranges listed in Canada: Black 1000001–1164062, Off-White 2000001–2040144, Forest Gray 3000001–3026514.

Sony