U2Pro (Upgrade) Black Bone Conduction

SPECIFICATION

Bluetooth solution: Lanxun 5335B (中科蓝讯)
Bluetooth version: V 5.2
Frequescy response: 20HZ~20Khz
Operation range: ≤ 10 meters
Music time: 6 hrs
Standby time: about 120hrs
Battery capacity: 240 mAh
Color: black
Materials: ABS + PC + silicon
Language: Chinese, English (double press the main button to switch)