GPS Car Navigator YXD-350G Display: 3.5", Transflective TFT Color LCD, 64 Colors, H76.9mm*V63.9mm*D31.5mm, H320GRB*V240 pixels, 250cd/m2, C/R=300, LED Backlight Touch Screen: Supported USB: USB Client 1.1, full speed, mini slot, without power supply function UART: 3.3V TTL UART for GPS Module SD: SD/multimedia card slot Audio: Mono 1W/8 ohms speaker, stereo 80mw/32 ohms Headphone Buttons: 9-up/down/left/right/zoom in/zoom out