Display technology: E Ink electronic paper Screen size: 6 inches Display resolution: 800 x 600 pixels Gray scale: 4 level gray scale Media format: TXT, HTML, and Adobe? PDF Image: JPG and PNG Audio: MP3 Storage media: SD memory cards External memory: SD card (up to 2GB) Internal memory: 16/32m Memory card slot: SD card Language: simplified Chinese, English, and more Power battery: rechargeable lithium Recharging time: approx 4 hours with USB charging from powered computer or approximately 2 hours when using AC wall charger AC power: AC charger requires 100 - 240V, 50 - 60Hz, 0.6A Operating system support: Linux Weight: approximately 160 grams without cover Dimension: 175 x 128 x 10mm Operating temperature: 0 to 90 degrees Fahrenheit (0 to 50 degree Celsius) Storage temperature: -36 to 126 degrees Fahrenheit (-20 to 70 degree Celsius) Accessories: Power charger Data cable Case Cd User's manual