Necklace Design, No Display
    Music Format: MP3, WMA, WAV
    System: Windows 2000/XP/Vista
    Power Source: Built in Li-Polymer
    Bit rate: 32-320Kbps
    Earphone Jack: 2.5mm
    SNR (Signal to Noise Ratio): >85dB
    Output of earphones: 2 x 5mW (32Ohm)
    USB: 2.0
    Dimension: 43L x 15W x 8D mm
    Water Resistant ( not underwater )
    Color: Black/ Blue/ Green/ Red/ Yellow/ Silver

OEM/ODM,Customized Logos/Designs are Welcome