The Lorex LW2001 Digital Wireless Color LCD Receiver is an affordable way to monitor what you want to protect. The Digital FHSS wireless technology provides excellent video quality and secure transmission. The supplied indoor color camera has a built-in microphone for listen-in audio and has versatile mounting options: tabletop, wall or ceiling with mounting screws included. In addition to AC operation, the camera can optionally operate with four (4) "AA" alkaline batteries for true portability (batteries not included). The portable handset is equipped with built-in belt clip, folding stand and the lithium ion rechargeable battery contained in the handset can last up to 6 hours between charges.