More Specification: 1. Power Output: 5W x 2 2. Speaker Unit: 3Ω、 OD45mm 2. Frequency Response: 100Hz-18kHz 3. IS/N Ratio: － 85dB 4. Distortion: < 0.3% 5. Bluetooth : V4.0+EDR 6. Play time: 4-7 hours 7. Working Range: up t