Features: ?High definition: 480TV in horizon ?DSP signal to make sure the clear picture. ?Color switch to B/W automatically ?Back light compensate ?270x focus adjustable Model LH-2680H scan frequency\ 50Hz Iris control Manual/automatic s/n rate More than 50db Voltage DC 9V-15V Lens 27times(F1.5(w),F3.8(T)) Power 4.1w Lowest? 0.1lux(color),0.01lux(b/w) Dimension 58mm*65mm*104mm Screen Display English Weight 410g Back light compensate Open/automatic/off