Capacity : No built-in momery. With Micro-SD / TF card slot. TF card isn\'t included in this listing and need work with your TF (Micro SD) card(Support 128M, 256M, 512M, 1GB, 2GB, 4GB, 8G)
Special Functions :Player Music; Also can use as TF Card Reader
Format supported : MP3 audio format.etc
Operation System : WINDOWS7/2000/XP,WP8 etc
Battery : Built-in rechargeable Li-ion battery, directly connect with PC via USB cable for re-charging
Charging time : About 2~ 3 hours
How to charger : Connect the USB cable to the PC,after this,there will be a USB window comeout,then,bounce
out of the USB window and closed it.keep charging for 2~ 3 hours to finish batter charging.
Color : 3 colors available
Package includes:
1pcs watches MP3+USB