1. Function: answer call, play/pause, volume +/-, switch up/down song
2. Support TF card playback, up to 32GB/ Aux in audio interface
3. Bluetooth version: V4.0
4. Built-in 2000mAh lithium polymer battery
5. The speaker charging time is about 3 hours / standby is about 100 hours / continuous use is about 6-8 hours