Compared to other similar products on the market, our smart tracker connects to your phone via Bluetooth. You can view the exact location through the app. This product helps you find keys, wallets, remote controls, or purses accurately and quickly.The practical smart tracker has a lightweight and compact design, making it portable with wide application. It can easily be carried in your backpack.It is constructed of ABS material and comes with a built-in CR2032 button battery that lasts up to 12 months and is easily replaceable. Simply press the Call button in the app or the Beep button on your phone, and the Bluetooth-enabled finder will beep to help locate your items. If you misplace your phone, double-click the button on the connected tracker, and your phone will ring even when set to silent mode.The product measures 3.8 cm in length, 3.8 cm in width, and 1 cm in height. It features a metal ring design, allowing it to be easily attached to a keychain for convenient carrying. When connected to the mobile app via Bluetooth, you can use the app's self-timer function to take pictures wirelessly. Double-click the devices button to trigger the camera in the app.When the item goes out of range (up to 25 meters), both your smartphone and the key finder will emit an alert tone. This helps prevent leaving your keys behind. If your item is lost, the app automatically records the last known location where the connection was lost, allowing you to check the map and estimate its whereabouts.Item Name: Smart Tracker Material: ABS Power Supply: CR2032 Button Battery (Included) Sound Reminder Decibel: 80dB Bluetooth Version: 5.0 Usage Distance: 25 meters Compatible System: iOS 11.0 and above, Android 8.0 and above Suitable for: Phone, Keys, Bag, etc. Features: Anti-lost, Two-Way Alarm, Selfie Function Size Details: L: 3.8 cm / 1.5", W: 3.8 cm / 1.5", H: 1 cm / 0.39" (Approx.)Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight variations in dimensions due to manual measurement.Package Includes: 1 x Smart Tracker 1 x Metal Ring