Dimensions: 151x103x88mm(L*W*H) Weight: 320G Material: ABS Battery: lithium polymer Battery capacity: 300mAh Speaker: high magnetic Ulta-thin all frequency 50mm, attract Low frequency increase device Loudspeaker output: 2.5W(1KHz,THD=10%) Frequency response: 120Hz-20kHz Signal-to-noise ratio: ≥80dB Distortion: ≤0.5%(1KHz@1W) Bluetooth compliant: 2.1+EDR Operating frequency range: 2.4GHz - 2.48GHz Wireless range: 10 meters: AUX, Bluetooth Wireless, USB Playback time: until to 3 hours on normal volume(only playback) Input voltage/currency: DC5V/1500mA