Features: Anti-Theft Key Finder: Smart Key-Tracker is a great little tool to remind you when you want to forget your belongings. Pair it with the apps and keep it running on the back end, once its disconnected, the phone and key locator will ring to alert you, perfect for traveling and avoiding loss. Portable and Convenient: The smart key finder has a small design and is easy to carry. You can put it in your wallet as a wallet picker, or together with your phone as a phone picker or other item picker, bringing you convenience anytime, anywhere. Find Your Items: Key Locator is a great little tool to help you search and find the items you always misplaced. Just hang it on your luggage, wallet, keychain, or pet. If you cant find an item, double-tap the button on the apps and it will beep to help you find it quickly and easily. Easy to Use: Use cellphones Bluetooth function to search and connect to the device, small and portable design: the key finder is easy to connect, very stable, and can keep the connection well. Good Choice of Present: These tracking devices can be applied by yourself or given to your friend with poor memory or juniors. For them, these smartphone keychain alarms are considerate presents to receive. Notice: 1. Actual color may be slightly different from the image due to different light effects. 2. Please allow 1-3cm deviation due to manual measurement. Description: Working voltage: DC3.0V Wireless distance: 40m Include: 1x Mini Tracker-Smart-Tags for Apple-Devices