How to use it: 1. Attach this electronic key finder to your keys. 2.When you lose your key in your drawer, cupboard, under the bed etc. You can just clap, whistle or shout, then it sounds and flashes to help you to find your keys. 3. After a few minutes, when there is no any noise, it will stop sounds and flashes itself. Note: Any noise over 85-90DB causes the promotion gift to beep and the light to flash.