1. Function: Radio, answering calls, voice control, play/pause, volume +/-, switch up/down song
2. Support 3.5mm audio interface, connect the earphone directly with the audio cable without "electricity"
3. Bluetooth version: V4.1
4. Built-in 600mAh lithium polymer battery
5. Charging time: about 3.5 hours / standby time: about 200 hours
6. Talk time: about 6-8 hours / listening time: about 10-12 hours