Speaker size: 6mm Dynamic Drive Frequency response: 20-20000Hz Microphone: MEMS, - 41dB±3dB Battery Life: About 12+ Hours Input Power: 135mAh/3.7V Battery Life: About 8 Hours Earphone Charge Time: 1.5 Hours Support Protocols: HSP/HFP/A2DP/AVRCP

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