REMAX RB-660HB Wireless Bluetooth Stereo Headphone

Bluetooth version: Bluetooth V5.0
Support protocol: A2DP, AVRCP, HSP, HFP
Bluetooth distance: more than 10m
Working voltage: 3.3-4.2V
Speaker impedance: 32 ohms
Speaker power: 50mW
Battery specification: 300mAh