Feature:1. Smart Anti Lost Device: Suitable for placing keys, wallets, bags and umbrellas; it will alert you when you are away from your target, so you don't need to worry about losing something.2. Easy to Use: Pull out the insulating tab and it will turn on when you hear a drop; then use your phone's Bluetooth to search and connect to the device, and if you lose your phone, double tap the tracking button and your phone will sound an alert.3. Distance and Disconnection: Update at a working distance of about 1050 meters, once your item is out of range and lost, the app will automatically record the last location where this item locator was disconnected from the phone, so you can speculate the approximate location based on the last recorded point shown in the app map to find your lost item, the phone and item finder last about 10 seconds when disconnected.4. Easy to Connect: Key finder is easy to connect, very stable, keep the connection good; smart anti loss device is very small, will not take up too much space, the battery can be used for 180 days.5. Ideal Gift Choice: This smart anti lost device will be an ideal gift for your family and elderly who also misplaced their keys or cell phones, and can help them solve a lot of troubles; while acting as your travel companion to remind you to find lost things.Specification:Item Type: Pet Intelligent Anti Lost DeviceMaterial: ABS Electronic componentsWeight: 24g / 0.85ozBattery Type: CR2032H button cell (shipped with built in battery)Number of Batteries: 1 pieceBattery Capacity: 240mAh.Package List:1 x Pet Anti Lost Device1 x Instruction Manual