COMPATIBLE Xiaomi Youpin Ranres Intelligent Anti-lost Device Two-way Search Bluetooth Alarm Smart Positioning Finder, Distance: 15m Features 1. The anti-lost device has a two-way mutual search function, and either party can make the other party issue a prompt, 15m long transmission distance. 2. When the connection distance exceeds the transmission distance, both the mobile phone and the anti-lost device trigger an alarm, so that you do not forget any objects. 3. Open the Ranres App and see where the anti-lost device was last disconnected for a bit more security. 4. The easy-to-use Ranres App works closely with the smart anti-lost device. 5. Long standby, easy to use battery replacement. 6. Simple and slim design with a rounded feel of cobblestones. Specifications 1. Product name: Ranres intelligent anti-lost device 2. Product model: RW01MN 3. Product color: White, pink, blue 4. Product specifications: 42x42x8mm 5. Product weight: 10g 6. Package list: 1 x Xiaomi Ranres Anti-lost device