Model: JT-2156BP COLOR 1/4" SONY CCD, 420TVL, 1.0Lux,(3.9--85.8mm) Lens, 22 times optical zoom, Automatic focus, DC12V Model: JT-2156BPII COLOR 1/4" SONY CCD, 420TVL, 1.0Lux(Color)/0.05Lux(B/W),(3.9--85.8mm) Lens, 22 times optical zoom, Automatic focus, DC12V Model: JT-2156BPIII COLOR 1/4" SONY CCD, 420TVL, 1.0Lux( color)/ 0.05Lux(B/W),can be 0Lux with IR lamps, (3.9--85.8mm) Lens, 22 times Optical zoom, Automatic focus, DC12V 2-year-warranty with best quality and competitive price!