1.       lens fo polaroid from USA:11 layer,can block 100% of all UVA,UVB,UVC and harmful blue light.

2.       available flash memory size:128MB,256MB,512MB,1GB,2GB/4GB

3.       shock proof and Anti-static electricity Audio:Stereo sound

4.       compatible Audio formats:MP3/WAV/WMA

5.       optional FM radio and recording function

6.       Continuous playing time:above 4 hours

7.       Built-in lithium-ion polymer battery:3.7V,150mAh:Recharging time:3 hours

8.       Standard mini USB 2.0 port:share same USB port for download,upload and charge