1. Correspond with: ISSC V4.12, support: HSP, HFP, A2DP, AVRCP
3. Frequency range: 2.4GHz
4. Transmitting power: class 2
5. Wireless working distance: ≤10m
6. Charging time : ≤2.5 hours
7. Talk time: ≥8 hours
8. Music time: ≥6 hours
9. Standby time: ≥100 hours
10. Could connect 2 cellphones at the same time