Sennheiser Momentum 4 Wireless Black, Mic, Battery time up 17 hrs
Article number (SKU) – 509266 (black), 509267 (white)
Wearing style – Headband stereo headphones
Ear Coupling – Around-the-ear, circum-aural
Connectivity – Bluetooth 5.2 compliant, class 1, 10 mW (max)
Transmission frequency – 2,402 MHz to 2,480 MHz; GFSK, /4 DQPSK / 8 DPSK
Supported Profiles – A2DP, AVRCP, HFP
Codecs – SBC, AAC, aptX™, aptX adaptive™
Speaker Type – Dynamic
Transducer principle – 42mm diameter
Speaker frequency range – 6 Hz to 22 kHz
Speaker sensitivity – 106 dB SPL (1 kHz / 0 dB FS)
Total harmonic distortion (THD) – Speaker: 30°C may lead to extended charging times
Battery type – Built-in Lithium-Ion rechargeable batteries 700 mAh
Power Supply – 5 V, 800 mA max, USB charging via USB-C socket
https://www.sennheiser-hearing.com/en-US/p/momentum-4-wireless/
