Descriptions:

Version: 1. The Bluetooth 3.0 Bluetooth version
2. Support agreement: HFP HSP A2DP AVRCP APTX
3. Use the distance: 10 m transmission
4. The speaker diameter: 40 Φ (mm)
5. The frequency range: 30-16000 Hz
6. Music playing time: 6 to 7 hours
7. Standby time: 180 hours
8. The charging time: 2 to 3 hours
9. The rechargeable built-in rechargeable lithium-ion polymer battery, using portable USB charging port.
10. Voice support: support
11. Cut the song: support
12. TF card: support
13. FM radio: support
14. The noise reduction: the CVC6.0 noise reduction technology
Answer/hang up/reject function: 15 / switch machine/Bluetooth pairing/play/pause, call waiting, redial, mute, volume, and listen to music pause/play, noise reduction, and starter switch, insert TF card, FM radio, Micro socket interface, audio line