The main function:  1. Two-way anti-lost: Connect the anti-lost device to the mobile phone through the APP software, and then bind the anti-lost device to items, such as hanging on valuables such as keys and wallets. When these items are about 20-50 meters away from you Safe distance, your mobile phone and anti-lost device will alarm to remind you that you forgot to bring something;  2. One-click search: Sometimes you can't find the key or wallet when you go out, you can click the 'Call' button through the mobile APP, the anti-lost device will make a sound, and you can easily find the key or wallet according to the sound; if you forget where you put your phone, You can call your phone through the anti-lost device, no matter if your phone is muted, vibrated or stopped, it will ring (note: the muted state of Android 8.0 and above will not alarm, only vibrate), allowing you to find it easily and quickly;  3. Lost location: If your item has been lost and you missed the reminder, then the mobile APP will automatically record the location of the next disconnection from the item, and locate the lost location through the map location to help you recall and quickly retrieve the item;  4. Sharing management: When the bound item is used by multiple people, such as TV remote control, etc., you can turn on the object-finding mode and share it on the patch setting page; after sharing, the patch will work in the object-finding mode, only when searching It will be connected when patching.  5. Multi-task management: Android phones can manage 4-6 patches at the same time, and IOS phones can manage 12 patches at the same time;  6.And you can customize and name different items in the APP for easy management. For example, the anti-lost device bound with the key is named 'key', and the anti-lost device bound with the wallet is named 'wallet' ;    Specification:  Size: 40x40x7.9mm;  Weight: 10g;  Shell material: aluminum alloy + polycarbonate;  Standby time: 10 months;  Battery model: CR2032 button battery;  Reminder volume: 85-90 decibels;  Compatible platform: system above IOS8.0, system above Android 4.3;    Package Includes:  1 * Anti Lost Reminder