BT tracking Never worry about losing your items. When your phone or other connected item is out of sight, simply double-click the button to trigger a sound alert. If you're unsure where an item was left, open the mobile app to view its last known location. Automatic alarm helps prevent loss when the connected device moves beyond a certain distance from your phone, it will automatically sound an alert to remind you. Compact and lightweight, sized like a coin, its easy to carry and can be placed in bags, wallets, keys, or other personal items. Two-way search function double-click the button on the tracker to make your phone ring, or use the app to make the tracker beep. Product Name: Smart Object Finder Product Net Weight: 21g Bluetooth Version: BT 5.0 Product Model: Y02 Compatible Systems: iOS / Android Standby Time: Up to 6 months Effective Range: 15 meters Battery Type: CR2032 (included) Color: Black Material: Plastic Package Contents: 3 x Smart Object Finders 1 x User Manual (English and Chinese)