* Frequency: 80Hz-12KHz * Output power: 8W * Speaker impedance: 4Ω * Battery: 3.7V/1000mA Rechargeable lithium battery * Recharge time: 2-3Hours * Battery working time: 3----8Hours

1.Small size,external battery designed for easy replacement 2.The end-user not only enjoying the music of audio output,But also connect with external audio systems for the player, Higher useful value of multi feature 3.Have music player functions,Broadcast MP3 audio file in USB directly. 4.By Nd-Fe-B Magnetic trumpet,instant response quickly,Noise reduction degree is higher 5.Multi-Using acoustic theory and technology of digital frequency shift, Available to meet outdoor and indoor needs