1. Material: ABS varnish + electroplating
2. Bluetooth version: Zhongke Lanxun 5.1
3. Bluetooth distance: 10m
4. Support protocol: A2DP, HFP, AVRCP
5. Battery capacity: polymer battery 110mAh
6. Speaker: 32 ohms/3-5 milliwatts
7. Output voltage: USB 5V
8. Charging time: 30 minutes full
9. Single battery play/talk time: 10H / 30H
10. Support simultaneous connection of 2 mobile phones
11. Support low battery reminder
12. Support caller number
13. Adjustable lanyard, easy to use
14. Ergonomic design, comfortable to wear