APP: Tuya/Smart LifeBattery model: CR2032 (replaceable)Battery parameters: 240mAhSize approximately: 39 * 39.12 * 7MMWeight: approximately 9G (excluding lanyard)Color: WhiteAccessories: 1PCS hanging ropeFunction:1. Search for items2. Find a phone3. Location recording (breakpoint memory)4. Reminder of forgotten items5. Ringing tone/volume settings6. Multiple device management (Apple phones can be bound with 16 anti loss devices, while Android phones can be bound with 18 anti loss devices)7. Mobile phone can check battery level8. Other settings (modify device name/image identification)