Detailed Product Description 4.3" TFT touch screen 480 x 272 pixelsWindow CE 6.0 OS windtouchReceiver: GLONAV moduleCPU: SISIS 300MHZMemory: SDRAM 64MB/ Flah EPROM 64MB, up to 2GBBuilt-in GPS antenna, Built-in 1.0W loud speakerMini USB 2.0Expansion slot: SD card, MMC cardWith 3.5mm earphone jackBuilt-in rechargeable Li-ion 1300mAh batterySupports audio file formats: MP3, WMA, AMR, ACC, AC3, ...