Long-lasting battery: Battery provides over 6 months of standby time and can be easily replaced for long-term use.Real-time positioning: Track the location of your lost items or pets through the Bluetooth-compatible key tracker and mobile app.Waterproof and durable: The device is waterproof, making it suitable for outdoor use and ensuring its longevity.Multiple functions: Features such as electronic fence, tracking query, low power alarm, and silent care provide added convenience and security.Compact and portable: The compact design allows you to easily carry the key tracker in your wallet, bag, or attach it to your keychain, making it a versatile item finder.Item Name: Anti-Lost TrackerMaterial: ABSApplicable Objects: Pets, Keys, Backpacks, Suitcases, Headphone SetsApplicable Platforms: Fully CompatibleWearing Method: HangingWireless Distance: 15MPower Supply: 200mAhBluetooth-compatible: 5.2Features: Real-time Positioning, Waterproof, Long Standby Time Size Details:L: 38mm/1.5", W: 38mm/1.5", H: 6mm/0.24" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Anti-Lost Tracker