Uniclife Key Finder Wireless RF Item Locator, Remote Control-1 Transmitter and 4 Key Finder

Uniclife key finder wireless rf item locator, remote control - 1 transmitter + 4 key finder introduction: small personal items tend to mysteriously disappear and - after extended searches - reappear in places never expected. This key finder puts an end to these time-consuming search operations. This is absolutely a smart unique key finder that you've ever seen! it contains a tumbler remote control and four receivers.  Simply press the remote control and follow the audio signal, it will locate your keys or other lost items up to 50 meters away. Specification: size (transmitter): 70-40-13mm size (receiver): 50-36-11mm packing size: 210*116*20mm  weight: 120g battery (transmitter): cr2032, 3v  battery (receiver): cr2032, 3v (1pc/receiver) sound: 90~100db transmitting range: 30~50 meters frequency: 433.92Mhz housing material: ABS package included: 1 x smart transmitter 4 x receivers 4 x cr2032 battery 1 x user manual.