Add chipolo card spot and chipolo one spot to the apple find my app and hundreds of millions of friends in the find my network will help you find your missing keys or wallet. When your items are hiding nearby, play a very loud sound to locate them. Get a notification when you accidentally leave your item behind or when the find my network locates your missing items. Designed to fit your keys and wallet. Features keyring hole. Attaches directly to keyring easy to hear up to 120db replaceable battery lasts up to 1 year water resistant ipx5 rated as thin as it gets 2,4 mm (0,09 inch) long battery life lasts up to 2 years