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H2

Solution: JL 
 Use time: 7-8 hours 
Standby time: 250-300 hours 
Battery: 130 mAh rechargeable lithium battery with protection board
Charging time: 2 hours
Speaker: Ø10mm
Sensitivity: 88dB S.P.L at 1KHZ
Impedance: 32Ω
Frequency response: 2.42-2.48GHz

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