1. Find the device: Click the "Call" button in the application to make the device ring and find it easily by sound. 70dB-90dB reminder:Find things easily. 2. disconnection reminder: When the phone and the device are disconnected, both of them will give an alarm to remind you to take the phone or items. 3. Location history: When the device is connected or disconnected from the phone, the application will record the location. The disconnect location will help you find.Go to the location of the lost item. 4. Reminder of lost items: When your belongings and mobile phone leave the Bluetooth range for a period of time, the mobile phone will prompt a pop-up window. 5. Lost and Found Office: If the device is lost, you can declare it lost in the application. When another application user enters the lost setting. When you open the application, you will receive the found location in the application. Function:worldwide location+RFID blocking function Connection: ① Bluetooth connection, used for short-range induction search ②for Apple Find My network connection (used worldwide)Positioning search) Shell:PVC material, environmental protection and durability. watperproof:IPX67 Standby time:4-5 months Battery:150mA, chargeable Sensor:acceleration sensor Speaker:built-in speaker with sound of 70-90dB. Product weight:about 13g System requirements and compatibility: ①for Apple ID installation ②iOS 14.5 or newer iPhone and iPod.Touch model ③Install for iPadOS 14.5 or newer iPad model. Operating environment:Operating environment temperature:−20℃ to 60℃ (−4℉ to 140℉) Siri shortcut key: Turn on Siri Shortcut, and voice management makes the device ring and be smarter. Multi-equipment management: In general, a mobile phone can bind up to 16 devices and 7 Bluetooth devices online