Specifications:
BT version: V5.0
Operation range: 10m(with no obstacle)
Charging time: approx.2hr
Standby time: approx.120hr
Playback time: approx.4hr
Battery type: li-ion
BT prifiles: HFP/HSP/A2DP/AVRCP
Battery capacity(earphones): 3.7V 43mAh
Battery capacity(charging case): 3.7V 380mAh