? THD: Less 0. 05%

? Memory: 128MB-4GB

? Working time: 7 hours

? Recharge time: 3 hours

? Earphone impendance: 16×2

? Output power rating: 55mw

? Earphone output power: 5mw

? Signal-to-noise ratio: 87. 2dB

? Output frequency: 20Hz-20khz

? Normal works voltage: 20-25Ma

? Support: MP3/WMA/WAV format

? PC interface supported: USB2. 0(FS)

? Battery: Li-Ion polymer 3. 7V，150mah

? Maximum input power rating: 5VDC, 150Ma

? Built-in high capacity battery.

? 3D stereo, perfect sound quality.

? Comfortable switch and smooth control

? Support music format: MP3/WMA/WAV

? Big control button and user-friendly controls.

? 36gram compact design with fashionable style

? USB 2. 0 port for recharge and download/upload.

? Soft gum material appearance suit for all head shape.

? Human engineering design, suitable for people doing sports, made from soft gum