DSP high resolution noise reduction technic

360 degree surrounding 

Come TF card Slot

Material:ABS

Battery Type: Lithium

Charging time: 2 hours

Playing music time: 5 hours

Charging Voltage: 5V 500MA

Power：3W*2

Speaker：Ø40mm，4Ω3W*1 

Distortion：<3% 

Operating Distance：<10M 

Frequency response：90Hz-18KHz 

SNR ：≧80dB 

Battery：1200mah

Product size: 160mm*35mm*60MM