RMS: 3W
Frequency response:150-18KHz(±3dB)
SNR：≧80dB
Drive unit：1.77inch（Ø45mm）,4Ω
Input:3.5mm jack
Support U-disk，SD/MMC Card
Built in Li-ion battery, or USB 5V/1000mA
Charge voltage: 4.2-5V
Battery capacity:500mAh
Built in MP3 player
Support IPOD input and control function
Weight:200g

Packing
Box size：160*50*65mm
60pcs/carton
CTN SIZE:35.5*33*31 cm
N.W:15.6KG
G.W:16.8 KG