Features:1. Find the device: Click the "Call" button on the application, the LED of the anti-lost device will flash for 10 seconds and sound a sound reminder, the more circles displayed on the application panel, the closer the phone and the anti-lost device are.2. Disconnected positioning: When the mobile phone and the item bound with the anti-lost device are disconnected from the Bluetooth-Compatible connection (lost), the mobile phone will automatically record the locationss of the disconnected (lost) item.3. Portability and size: our key finder is very easy to carry. It's like a simple keychain. You don't have to worry about finding your keys, handbag or your beloved pet in the office, home, outdoors, etc.4. Perfect gift: the key finder can help you and your family find the misplaced keys, wallets or other valuables within seconds. Thoughtful gifts for family and friends, ultra-thin, lightweight, simple and modern design.5. Safe TravelKey Finder is your best travel companion. The key finder is synonymous with safety. You don't have to worry about missing important items when leaving the hotel. Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurementDescriptionBattery model: CR2032Volume decibel: 90dBConnectionless Standby: 560 daysBluetooth-Compatible frequency band: 2.4GConnected Standby: 180 daysBluetooth-Compatible distance: 40 metersWorking voltage: DC-3VOperating temperature: -10-70Standby current: