1. When the device is connected to the cell phone APP Bluetooth, use the search function of the APP to make the anti-loss device sound and find the item. 2. When the device is connected with mobile phone APP Bluetooth and need to find the phone, double click the device button to call the phone, the phone will make a sound. 3. When the item is disconnected from the Bluetooth of mobile APP, APP will record the lost location of the item after disconnection, and the lost location after disconnection will be displayed on the map of APP. 4. Material: ABS 5. Compatible system: for IOS / Android. 6. Bluetooth version: Bluetooth v4.0 7. Effective distance: 10-50 meters 8. Battery type: CR2032 9. Standby time: 180 days 10. Size: 30 x 9mm
