This is a 22.4GHz Wireless 4CH Receiver & CMOS Camera Security System, including 13 color CMOS camera system with built-in microphone, wireless flip-type 4-channel AV receiver, ISM 2,400 to 2,483MHz frequency, CMOS Pixels 628 x 582 (PAL)/510 x 492 (NTSC), 1.5Lux/F1.5 minimum illumination, 18M bandwidth, gain control automatic, more than 85dbm receiving sensitivity, 62 degrees view angle. With it, you will never let any single memorable scene sneak.