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Features:1. Bluetooth Version V2.0
2. Frequency: ISM 2400 -2480GHZ
3. Support File: Hands-free & Headset Profile
4. RF Output Power: -6~+4dBm
5. RF sensitivity: >-75dBm
6. Distance: Within 10 meters
7. Indicator: LED (Blue & Red)
8. Talk Time: 6 hours
9. Standby Time: 120 Hours
10. Battery: Built-in Rechargeable Lithium battery
11. Audio Code: Single Audio
12. Transmission Power: SBC Max. 200kbps, 48.00kHz, 16bit
13. Audio frequency range: 20HZ-22KHZ
14. Audio frequency output power: (RL=32 ohms) 2.5mW
15. With a "Beep" sound when the phone call-in
16. Body weight: 15g
18. Qty./ctn: 50pcs/ctn
19. Dimensions: 50 * 20 * 21cm