Zhongtiandingsheng Shenzhen Industrial Q1 ANC Wireless Headset User Manual Product Parameter Product type Dynamic Earphone Speaker diameter: 40mm Speaker impedance 32C+15% Battery capacity 680mah Battery type Polymer Lithium Battery Charging time 3 Hours Noise Reduction Rating -30DB Duration time a30 hours Transmission distance 10 m Working voltage 3.7V Charging voltage :sDC4.75V-5.5V Headset Accessories Earphone/USB charging …
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