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Product description:
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A9 pro ANC fifth generation + smart screen "ANC+ dual-mark ENC+ in-ear detection light sense"
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Color: White - Black
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Chip: Jerry 7003D8 noise reduction + light sensing in-ear detection
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Version: 5.4 [binaural call]
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Working frequency: 2.402-2.480GHz,
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Support protocols: A2DP/AVRCP/HFP/HID/AVCTP/AVDTP, and SPP
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Transmission distance: 15M [barrier-free]
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Response frequency: 20～20000Hz
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Speaker unit: ΦF13 titanium film, 32Ω±15%, 7.118±3DB 5mW
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Microphone: 2718 silicon microphone -42±3dB
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Charging input standard: contact, DC4.75-5.25 V/600MAH
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Battery type: 3.7V polymer battery 500mAh with protection board (3C fast charging battery), headphone battery 30mah
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Charging time: 1h
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Headset working time: the measured 100% volume plays continuously for about 5.5 hours
