Rated Power:  RMS 3WX2（THD=10%，f=1KHZ）
    Frequency Response: 100Hz~20KHz
    S/N radio:≥75dB
    Impedance：4Ω
    Power: DC 5V   
    Color: Black/Red/Blue
    Package:50pcs/CTN
    Crystal Plastic Crust.
    Support usb host/SD/MP3 playing.
    FM function by option.
    Stero sound. Ultra-low sound.
    Audio input.
    Nokia 600mah rechargeable Li-thium battery

OEM/ODM,Customized Logos/Designs are Welcome