Features:1. Wide Applicability: A multi-use, a cell phone can open applications at the same time to connect multiple anti-loss device, important items can be bundled to prevent loss.2. Two-way Anti-loss: Anti-loss device can find the phone, and the phone can also find the anti-loss device.3. Wireless: Low power consumption, environmental protection, using the latest low-power wireless technology. Wireless anti-loss device, wide applicability, multi-function, easy to use.4. Pet Finding Function: Help you prevent your pet from being lost, no matter where you are, you can easily find your pet according to the guide.5.After-sale service: If you have any questions, please contact us immediately and we will help you solve it as soon as possible.Specifications:Application Range: 15mSound Volume: 50(dB)Working Voltage: 3(V)Operating Current: 3(mA)includes:1 * Anti-lost Device1 * Instruction Manual