This key finder is made of ABS. Consists a key finder, a Led and a metal ring. Powered by 2 AG3 batteries. When you lose your key in your drawer, cupboard, under the bed etc, attach this electronic key finder to your keys. Just whistle, clap or shout, then it sounds and flashes to help you to locate your keys. Bright flashing LED makes it easier to find keys in the dark. Ideal item for promotional and personal security gift. Keep your logo outstanding by printing on this cool product! Custom logo is welcome.