Air Freshener Wireless Color & 2.4 GHz Transmitter -- The Air Wick Fresh Matic hidden camera is non-functioning as an air freshener but is perfect as a hidden camera. The air freshener is powered by a 12 hour rechargeable battery pack, no wires or cords to plug in. You'll be able to see everything happening in the room. Measures 8.5" by 3.5".