ANLENG 7" Car GPS Navigation HD FM 128RAM 4GB With Bluetooth AV-IN Wireless Rear View Camera Free Map Free North America maps. manufacturers have pre-installed maps of North America, and provide free updating. 128MB RAM  4GB Internal Memory. Micro SD socket, MAX Micro SD card up to 32GB. Windows CE 6.0. 7 TFT LCD Display,Resolution 800*480. Wireless waterproof rear-view license plate car rear backup camera. Visual Angle: 170 degrees can be chosen.