Built-in High-sensitive GPS receiver / Sirf Star III / Built-in GPS antenna 4", 480x272 resolution, Transflective TFT Color LCD, 64K Colors Touch screen CPU: ARM9 300/400MHz SDRAM: 64MB Nand Flash: 32/64/128/256/512MB/1GB (optional) SD memory Slot, SD (128MB-2GB) Power: 2200mAH/3.7V built-in rechargeable Li-ion battery Charging: 5V DC Power Jack 4.2 Core Navigation Software: Destinator / Map & Guide / Third Party Support: MP3, Movie, Photo and E-Book