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Product Specification:
Bluetooth version:     4.1
Radio-frequency region: 7m outdoor, 15m indoor
Standby time: ≈3500hrs
Talking time:  ≈8hrs
Playing time:  ≈7hrs
Charging time: ≈1.5hrs
Weight:        14.8g
Dimensions (length x width x height): 34x19.5x30mm
Microphone Unit: Ф4*1.5mm.
Directivity: All point
S.P.L: -42dB ± 3dB
Impedance: 2.2KΩ
Frequency Response: 100Hz-10KHz
Operating voltage: 2.2V
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