The pictures can be deleted by one or all The pictures can be viewed by page up and down The pictures can be edited and modified with the picture convert software USB interface: USB 1.1 , can be connected with computer. Supported: Window 98 / Me / 2000 / XP Battery: rechargeable battery 3.7V 250 mAH (Built-in) Picture format: to be converted will cover JPEG, BMP, GIF, PNG and TIF Control buttons: 4 keys Power On/Off switch Auto play mode (slide show) Working time: 4-5 hours Built-in NAND flash: 4M (max. storage: 56 photos) Color: red, blue, golden, silvery,pink, etc. Specification: Display size: 1.1-inch LCD: color STN Viewing direction: 12 O'clock Pixel arrangement: 96 (R.G.B) x 64 pixels View area: 24.07 x 16.71 Active area: 22.449 x 14.961 Pixel size: 0.219 x 0.219 Pixel pitch:0.234 x 0.234