Sennheiser CX 400BT True Wireless

SPECIFICATIONS

Dimensions 59 x 33.8 x 42.3 mm (earbuds and charging case)
Weight 49g (both earbuds and charging case) 6g (single earbud) 37g (charging case)
Package dimensions (L x B x H) 170 x 115 x 47 mm
THD, total harmonic distortion <0,08% (1kHz / 94dB)
USB Standard USB-C
Frequency response (Microphone) 100 Hz to 10 kHz
Bluetooth Version Bluetooth 5.1 compliant
Frequency response 5 - 21,000 Hz
Ear coupling In-ear, closed acoustics
Battery time Up to 7 hrs music playtime with earbuds Up to 20 hrs music playtime with charging case