Specification:
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1. Driver: 15mmÂ
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2. Impedance: 32 OHM
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3. Bluetooth version: Bluetooth v4.2 + EDR
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4. Bluetooth use band: 2.4GHz
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5. Power level: CLASS II
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 6. Output power: 30mW
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7. Bluetooth distance: 10 meters barrier
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8. Frequency response: 20-20000Hz
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9. Operating voltage range: 3.0V-4.2V
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10. Mic sensitivity: -42dBÂ
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11. With A2DP / AVRCP high quality stereo au dio transmission and remote control protocol
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12. Powerful noise de-noising circuit (active noise reduction)
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13. switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully)
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13. Talk time is about 2-3 hours
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14. music time about 1.5-2 hoursÂ
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15. Standby time is about 48 hours
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