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 features a lightweight and compact design, making it portable and suitable for various uses. It can be easily carried in a backpack. It is made of ABS material and comes with a built-in CR2032 button battery that lasts up to 12 months and is easily replaceable. Press the Call button in the app or the Beep button on your phone, and the Bluetooth-compatible finder will beep to guide you to the item. If you misplace your phone, double-click the button on the connected finder, 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 conveniently attached to a keychain. When connected to the mobile app via Bluetooth, you can use the app's self-timer function to take pictures wirelessly. Double-click the device's button to trigger the camera in the app. If the item goes out of range (up to 25 meters), both your smartphone and the key finder will beep to alert you. This helps prevent leaving items behind. If an item is lost, the app automatically records the last known location where the connection was lost, allowing you to check the map in the app to estimate its location. Item Name: Smart Tracker Material: ABS Power Supply: CR2032 Button Battery (Included) Sound Reminder Decibel: 80dB Bluetooth Version: Bluetooth 5.0 Usage Distance: 25m 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: 3.8cm / 1.5", W: 3.8cm / 1.5", H: 1cm / 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