This key finder can help you to find the lost keys, remotes, purses, glasses, canes, and other easily lost novelties quickly. With just one press on the color-coded button, the beep sound and flashes will lead you to find the lost stuff. Unliking the other cheap sound control key finder, this is an unique key finder using the advanced wireless technology, with LED flashlight and holder support. The ON/OFF switch is located at the right side of the transmitter, which allows you to turn on and off the LED flashlight easily. This becomes extremely handy when you need to find something in the dark. All those design make this product stable and reliable The key finder with base support is also a good decoration for your tea table, TV bench, bed, computer desk, bookshelf, etc. The remote control transmitter is removable from the holder and can be carried by you to find lost stuff. There are 4 received, the size is very small as 5X3.6X1.1 cm and could be attached with the easy lost thing with ring. Spectifications Wireless key finder with key ring Dock base included Sound:75~80dB Frequency : 433.92M Hz One transmitter with 4 receivers Dimension: 1054613mm (transmitter); 503611mm (receiver); 7529mm (base) Battery CR2032 x 4 (for receiver, Not included) Battery AAA1.5V x 2pcs (for transmitter, not included) Working distance: 30~40 M in open space LED torch function included. CE/ROHS/FCC standard