1. Bluetooth version:2.1+EDR
2. Frequency range:2.402-2.480 GHZ ISM 2.4G
3. Headset agreement:HSP V1.2
4. Hands-free association:HFP V1.5
5. Audio transmission protocol:A2DP V1.2
6. Transmission distance:0-10 M
7. Left and right channel separation:>60dB
8. Speaker power:4 Ohm / 3W
9. Operating voltage range:DC 12~24V
10. Work power:2W
11. Built-in Li-ion battery capacity:500mAh
12. Recharging time:2-3 hours
13. Working time:> 8 hours
14. Standby current:300 mA
15. Net weight:110g
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