Gigibon Anti Lost Alarm Key Finder Holder, Attachable Metal Key Chain Organizer with Clip and 2 Detachable Rings for Men and Women (silver) Keychain holder: made of upgraded zinc alloy and rigid plastic (on both sides), with clip and 2 detachable rings, well-made and durable Keychain bluetooth finder: equipped with blutooth 4.0, compatible with IOS7.0 and Android 4.3 (or later version)(The finder contains one battery CR2032) Anti-lost finder alarm: you don't know where keys are? don't worry, trigger the alarm on your mobile phone APP (APP is free), the finder makes alert sound, leading you to your keys; or when bluetooth connection fails, your phone alarms. Packaged in a beautiful gift box, ideal gift for men and women Money-back satisfaction guaranteed