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Bluetooth specification: V5.2
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Bluetooth Profile: HFP/A2DP/HID/AVRCP/AVCTP/AVDTP
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Charging voltage: 5V-1A
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Frequency response: 20Hz~20kHz
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Sensitivity: 112.5±3dB
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lmpedance: 32Ω
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Battery capacity of the headset: 35mAh
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Battery capacity of the storage box: 300mAh
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Transmission distance: 15M
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Play time: About 3.5-4.5 Hours
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Call time: About 3.5-4.5 Hours
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Charging time of headset: About 1 Hours
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Charging time of the Charging box: 1.5 Hours