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By certification 
Distance: 10 m
Power supplier: DC 5 V
Output power: 2 W(1 KHz,THD 10%)
Frequency: 160 HZ-20 KHZ
Signal & noise ratio: ＞80 dB
Impedance:4 OHM(Ω)
Li-ion Output: 3.7 V~4.2 V+0.05 V
Li-ion Input: 5 V
Lithium battery capacity: 300 mAh
Speaker Unit: Special Shaped with Diaphragm
Case Material: ABS
Dimensions: 100*50*12 mm
Weight: 55 g
Power supplier: DC 5 V
Output power: 2 W(1 KHz,THD 10%)
Frequency: 160 HZ-20 KHZ
Signal & noise ratio: ＞80 dB
Impedance:4 OHM(Ω)
Li-ion Output: 3.7 V~4.2 V+0.05 V
Li-ion Input: 5 V
Lithium battery capacity: 300 mAh
Speaker Unit: Special Shaped with Diaphragm
Case Material: ABS
Dimensions: 100*50*12 mm
Weight: 55 g
