LCD Display: 1.44" color display Internal Memory: 4MB built-in Memory( Nor-flash memory) Storage capacity: Up to 43 Pictures Power Supply: Build-in rechargeable Lithium battery(3.7V, 85mAH) Battery Life: 2.5Hours Continuous opeeration Auto Power off: No. Output Interface: USB 1.1 Operating Environment: 0~40 Operating Humidity: 10~90% File Format: JPG/BMP Slide Show Support: Yes Systerm Support: win2000/xp/vista