Detailed Product Description Features: 1) 2.4GHz, 1/4" CMOS camera, 2.5" LCD screen, 380TV lines sharp picture display 2) 4 channels available to avoid possible interference 3) Camera built in microphone and speaker in receiver for audio monitoring 4) Rechargeable Li-ion battery in receiver which can work 2 hours continuously 5) Bright and color adjustment for receiver 6) Moving detection alarm mode (receiver can make a sound to alarm you when something are moving before camera) 7) Open transmission distance100 meters 8) Frequency points for 4 channels are 2,414MHz, 2,432MHz, 2,450MHz, 2,468MHz (can be designed for customers especially in range of 2,400MHz to 2,483MHz) 9) Solutions: the product is cabinet and diaphanous. It is convenient to take and use. This product is suitable for family and office security usage, especially for baby security to avoid all possible dangers. It also can be used in supermarkets, marketplaces, small residence, door surveillance and bird watching 10) Caution: this product must be forbidden for illegal usage