Out of Range ProtectionThe key fob tracker stays connected to your phone through the app, you will be notified when it is out of range. It keeps you at a safe distance from pets or handbags. With self-timer functionThe advantage is that the tracking keychain can not only prevent the loss of objects, but also turn on the phone to take selfies. Solve your selfies from different angles and meet your different needs. Easy to useSince the keychain tracker only needs to be connected to whatever you might lose, please click "alert" on the mobile APP to search the tracking in the effective distance. It's not at all complicated to use. Find Items EasilyThe advantage of Bluetooth tracker is that it can help you find lost keys and other fancy items quickly easy to lose, such as wallets, cars, children, pets, bags, suitcases or other items. Nice gift choiceBecause if you have parents and friends easy to forget, you can send the key finder as a gift on their birthday or festival to show your concern. Size73.3*29.8*11mm