Specifications/Special Features:

Model no.SY-1017
Dimension (closed): 60 x 53mm
Net weight: 90.7g
Speaker: magnetically shielded 40mm
Speaker output: 3W
Frequency response: 200Hz to 16kHz
Signal to noise: 80dB
Battery type: lithium polymer
Battery voltage/capacity: 570mAh
Battery charging voltage: 5V + 0.5V
Battery charging duration: 5V to 2.5 hours
Audio playback format: MP3/WMA
Operating system: Microsoft Windows Vista, XP SP2, Mac OS 10x
New technology of SD card storage processing
New technology of microSD card storage media processing
USB connect, supports independent data mutual-transfers
Headset mute control
MIC voice input
Hidden 3.5mm audio retractable line
Unique patented technology retractable resonator
Unique patented technology speaker in series infinite
Unique inverted miro-hole design, low frequency better
Built-in high capacity rechargeable lithium battery