Ultraclear, digital pop-up screen for windshield; Mounts onto dashboard for driving info projection; 3.5″ multicolor LED; Displays speed & GPS compass; Dual-core processor chip for real-time data; Clear readout visibility day or night; Integrated light sensors for automatic image balance; Alarm sound level: 30dB; Automatic sync, power on/off with engine ignition; Universal OBDII (OBD2) compatibility for automobile, car, truck or vehicle ; Dim: .5″H x 3.5″W x 2.1″D ; Includes dashboard housing mount & power cable adapter;