Specifications: Product: S5 Bluetooth anti-loss device Color: black, white, pink, blue Material: PC+ABS material Power supply mode: CR2032 button cell Standby time: 100 days Alarm volume: 90db Weight: 9.6 grams Dimensions: 44mm*27mm*9mm APP：Kindelf Bluetooth version: Bluetooth 5.0 Packing: boxed Features: Easy to operate and carry. Specifications: 1. [100% brand new quality] 100% brand new quality.   2. [Four colors] Four colors, you can choose the color you want.   3. [Two-way alarm] Within the range of Bluetooth connection, you can look for each other. For example, after connecting with a mobile phone, pressing the button on the anti-loss device can make the mobile phone sound. Similarly, it can make the Bluetooth anti-loss device sound 90db.   4. [Automatic Alarm] When the mobile phone and the articles are separated by more than the connection distance, the Bluetooth alarm will automatically sound to remind you that the articles are getting away.   5. [Safe Material] Safe material, non-toxic and harmless, brand new quality, please rest assured.   6. [Location record] When the mobile phone and items are far away, you can find the last disconnected location on the APP, which is convenient to find.   7. [Self-timer] When you want to take pictures remotely, this anti-loss device can also be operated remotely as a self-timer. Package Included: 1* anti-loss device 1* instructions 1* color box