Battery capacity: 300 mAh

Internal use time: ≤32 hours

Outdoor use time: ≤6 hours

Standby time: ≤400 hours

Charging time: ≤ 3 hoursBattery 300 mAh

Functions: Adjust volume, switch songs, answer/reject incoming calls, hang up calls, call back, voice prompts, smart battery display, Bluetooths connection, smart shutdownSupport TF card/MP3 playback function/external music