Character: Operating System: Windows CE 5.0 Memory: 2GB flash memory and Support USB HOST Display: SHARP 4.3" Digital TFT LCD Touch Screen, 480*272, 16.7M color Video Playback: MPEG-1,MPEG-2,MPEG-4(.ASF,.AVI,.mp4),WMV9(.WMV), Motion-JPEG Audio Playback: MP3 (.mp3),WMA (.wma) Photos Playback: JPEG (.JPG),BMP (.bmp) Ebook Playback: TXT(.txt) Video Recording: MPEG-4 320*240 30fps Voice Recording: MP3(.mp3) Battery: Built-in Li-ion rechargeable battery 3.7V/3000mAH Battery Charging: Charge by 5 V DC USB Interface: Full Speed USB 2.0 USB Mass Storage: Support USB Mass Storage Specification for Removable Disk Physical Size: 113mm(H) x 75mm(W) ?17mm(T)