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Specification : Bluetooth chip:QCC V5.1Bluetooth Version: V5.10 Speaker diameter: 30mm Frequency range: 20-20KHz Impendance: 32ohms Sensitivity: 98+/-3dB Mic Sensitivity:-42±3dB Working time: 35H Standby time ：100H Charging time: 2.5H Bluetooth coverage:15M Barttery capacity: 400mAH 3.8V |
