1. Function: answer the phone, play/pause, volume +/-, switch up/down song, clock, perpetual calendar, alarm clock, radio
2. Support TF card playback, up to 32GB/ Aux in audio interface/ USB interface
3. Bluetooth version: V4.1
4. Built-in 2500mAh lithium polymer battery
5. Speaker charging time is about 2-3 hours / standby is about 60 hours / continuous use is about 6-8 hours