... navigation module, fast and accurate positioning, fast response, 4.3-inch touch-sensitive screen, vivid colors, clear picture, excellent ... step adjustment / FM transmitting antennaPower12V Car power supplyBattery1200mAH 3.7V rechargeable lithium-polymer batteryAudio AC97wma9/mp3 up to 320k/ ... case, especially for new users850MAH’s performance in the battery is fully charged, can use about 2 hours, GPS ...