1.Amplifier output power: 2.5W*2
2.Frequency response: 120Hz~18KHz
3.Drive unit: 1.5", 4Ω
4.Distortion: 0.3% 1W 1KHz
5.S/N Ratio: ≥75db
6.Isolation: ≥45db
7.Power supply: powerd by USB DC 5V      8. With bluetooth 
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