Description:
1. Bluetooth protocol: version 2.1+EDR
2. Frequency: 2.4 GHz
3. Bluetooth range: 10meters.
4. Net weight: 48g
5. Power supply:DC5V/120Ma
6. Working volt: 3.7V
7. Battery:  rechargeable Li-polymer battery
8. Talk time: up to 13 hours
9. Standby time: up to 220 hours
10. Charging time: about 3 hours.
11. Color: Light black, Metallic, rubber black
Accessories Options: 
Foam or protein leatherette ear cushion is optional
Structure Features:
1. Blocks 4 times external noise
2. Ultra long talk time
3. Support headset and hands free profile
4. Redial the last call ,Reject call and Volume adjustable.
5. Faster connecting, clear sound, anti-interference.
6. Multi-point supported: 2 connections simultaneously
7. Listen to music from PC.
8. On-line chat through Bluetooth wireless transmitter
9. Over-the-head Design