Never lose your keys again! This Smart Key Finder uses BT 4.0 technology to connect to your Android, iOS, or iPad. Easily locate lost car keys, luggage, wallets, dogs, or cats by viewing their distance from you on the APP. This 5-pack includes black, green, blue, pink, and white trackers. Easy to Use: Simply download the free iSearching APP and pair it with your smartphone. Press the remote control button and the receiver will "beep," allowing you to hear the tracker within 30-49 ft. When connected to your phone via Bluetooth, the key tracker can also be used as a remote control button to trigger your phone's camera shutter, capturing beautiful moments with ease. Ultra-Low Power: Features a replaceable built-in CR2032 button battery. Finder Keychain: The compact and lightweight design makes it easy to attach to your child's schoolbag or pet's collar. Real-time location tracking effectively prevents your children or pets from getting lost. The APP provides a last-seen pin-drop on the map to help you recover your items and find your car in the parking lot.