1.Sleek,discreet design.New behind-the-head sport MP3 player. It is the ideal wireless headwear for the active music lover.  2.Stylish, lightweight(36g), acctractive, Be connected and listen to favorite songs during those tough workouts, without getting tangled in wires!    3.Soft gum material appearance suit for all head shape, scratchless and very confortable when wear it even for a long time. 4.Support music format: MP3/WMA/WAV，and built-in surround stereo sound quality, let you enjoy your music freely. 5.Built-in high capacity recharge battery. Long playing time: up to 5 hours or play frim a single charge. 6.Big control button and user-friendly controls.
7.Confortable and engineered with cutting-edge. 8.USB 2.0 port for recharge and download/upload.
Support: MP3/WMA/WAV format
PC interface supported: USB2.0protocol
Working time: 7 hours
Battery: Li-Ion polymer 3.7V，150mah
Maximum input power rating: 5VDC,150Ma
Output power rating: 55mw
Earphone output pwer: 5mw
Output frequency 20Hz-20khz
THD: Less 0.05%
Recharge time: 3 hours
Normal works voltage: 20-25Ma
Memory: 128MB-4GB
Signal-to-noise ratio: 87.2dB
Earphone impendance: 16×2