The VTech BM5750HD video and audio baby monitor with 2.4GHz FHSS technology for a secure connection and clear sound without interference. The 720p HD Baby Unit features motorised pan & tilt, auto night vision, motion detection and digital zoom, and operates on mains power. Comes with 9 soothing sounds with 5 level volume setting. Also has a temperature sensor, speaker/microphone for 2 way communication with the parent unit and is wall mountable. The HD Parent Unit has a 7-inch colour display and uses a high capacity rechargeable battery pack for up to 15 hours of active video monitoring time before re-charging. LCD for room temperature monitoring and speaker/microphone for 2-way communication with the baby unit. It has sound activation mode, motion alerts, low battery audible alert and out of range audible alert.