The Essential Video Baby Monitor: simple and reliable function. Includes all the necessary functions to see and hear the baby while they sleep. Compact, comprehensive, and easy to use, the Essential Monitor can be wall-mounted above the crib to keep it out of reach of little hands. The rotating base means you can aim the camera wherever you want, so you can see the baby from anywhere in the room. VOX Function Activate the VOX function for the parent unit. The screen will automatically turn on upon hearing your baby's voice if they wake up, or an acoustic alarm can also be set to indicate this. Technical Specifications Power: 50.11 mW Frequency: 2.4 GHz Rechargeable battery for receiver 1 micro-USB cable and a jack for cable included High-quality 2.4" digital screen Excellent audio quality: clear sound, 0 interference Range of 250 m Excellent night vision Wall mounting kit included