LED display size: 22" Color: Green and red Display dots: 5mm LED, 6000CD for red, 8000CD for green. Input: 12V DC solar panel 30w Battery: 12V, 65AH Aluminium structure Radar frequency range: 10.15GHz Responding time: <5ms Max detectable speed: 255km/hr Detectable distance: 0-1060m (GSM/GPRS wireless connection is optional) Shows green figure when speed is within limit, and shows Red figure if the speed exceeds the limit.