BT tracking Never worry about losing your items. When your phone or other items are misplaced, simply double-click the button to trigger a sound alert. If you're unsure where an item was left, open the mobile app to locate it and find out exactly where it was dropped. Automatic alarm helps prevent loss when the connected device moves beyond a certain distance, the tracker will automatically sound an alarm to remind you to retrieve your belongings. Compact and lightweight, designed as small as a coin, making it easy to carry and attach to various items. Two-way search function allows you to easily locate your phone or item. Double-click the button on the device to make your phone ring, or use the app to make the tracker beep. Product Parameters: Product Name: Smart Object Finder Net Weight: 21g Bluetooth Version: BT 5.0 Model Number: Y02 Compatible Systems: iOS / Android Standby Time: 6 months Effective Range: 15 meters Battery Type: CR2032 Color: Black Material: Plastic Package Contents: 3 x Smart Object Finders 1 x User Manual (English and Chinese)