We are Akk Sinotek Ltd based in Shenzhen , China. We are member of companiess.com since August, 2008. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in mp3,mp4,digital frame,GPS,memory cards. Please find our product details below:akk-watch-mp3-Memory unit built-in 64MB-4GB flash memory. -Build-in hi li-ion rechargeable battery(3.7v). -Red/Green/Yellow light indicator. Full Description: 1. Portable and user friendly, Patented MP3 watch. 2. Support recording function. 3. Support a-b repeat function. 4. Supports MP3/WMA format. 5. Memory unit built-in 64MB-4GB flash memory. 6. Port round 4 pin USB port. 7. Build-in hi li-ion rechargeable battery(3.7v). 8. Dual charging methods: (1)USB cable (2)AC adapter/transformer. 9. Shockprooof without sound jumping. 10. Red/Green/Yellow light indicator Technical parameter. 11. Battery life about 5 hours continuous playing when fully charged. 12. USB transmission rate USB2.0(High Speed). 13. MP3 compression rate 32kbps to 256kbps. 14. Record frequency 32khz; Recording time 260minutes(128mb). 15. Output frequency rate 20hz to 20khz. 16. Earphone output 4mw+4mw(16). 17. Operating platform window98/me/nt/2000/XP or above.HDD media player1.Supported audio type:MP3/WMA/CD2.Supported movie type:JPEG/BMP/GIF3.Supported movie file format:AVI/VOB/DAT/MPG/MPEG4.Supported HDD :IDE, up to 500GB(now)5.Supported file system:FAT326.Supported language:Multi-language7.Audio output/input:Left channel/Right channel(Output/input)8.Video transfer type:Video /input9.Support video record funcion (REC) type:NTSC/PAL/ Automatically connected :USB HOST/USB MINI JACK12.Supported operation system:Windows ME/98/2000/XP/VISTA type:Remote controller and panel key14.8CM cooling fan and color LED display 15.Power suppply:100-240V AC OUT, 5V/2A&12V/2A DC OUTThank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.