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1.Bluetooth protocol: 4.0
2.Connection method: 3.5MM audio jack Bluetooth connection TF card USB 3.Interface Type : USB 4.Battery capacity : 3600mah 5.Frequency response range: 85Hz~20KHz 6.Output power: 5V-9V/1.67A Max 7.Signal to noise ratio: 90dB 8.Play time: 8 hours 9.box size:29.5*13.2*11cm 10.weight：954g |
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