Material: ABS Dimensions: 38x38x6mm Unit weight: 7g Color: BLACK WHITE Battery: CR2032 button battery, 200mAh Standby autonomy: 6 months Range: 15m (0-50m depends on the environment ) Functions: anti-loss, selfie, location, record Compatibility: IOS, Android App: isearching 1. [anti loss device] forget to put things there. Double click to retrieve them easily 2. [small and light] unique appearance design, small and light, easy to carry 3 [ app breakpoint location and easy retrieval ] when you don't know where the item fell, open the mobile app to view it and retrieve it according to the map 4. [Bluetooth alarm reminder] when the mobile phone or other items cannot be found, double-click the anti loss device, and the mobile phone will give a prompt sound 5. [automatic alarm to prevent loss] when the mobile phone exceeds a certain distance from the item, the item will automatically send out an alarm sound to remind you to take back the lost item Package Included: 1 x anti loss device nds ). Note: 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.