1. Function: answer the phone, play/pause, volume +/-, switch up/down song, clock, alarm
2. Support TF card playback, up to 32GB
3. Bluetooth version: V3.0
4. Built-in 1000mAh lithium polymer battery
5. The speaker charging time is about 2-3 hours / standby is about 100 hours / continuous use is about 6-8 hours