Feature: 1. Anti-lost valuables, when the mobile phone and the anti-lost device exceed the default effective distance, two-way automatic alarm, search the owner to prevent loss (used in the elderly, children, pets, etc.) 2. Two-way search, forgot to take the phone? Double-click the anti-lost device, the phone alarms, what did the wallet forget? Press the call in the mobile APP, the anti-lost device will alarm, and follow the voice points to retrieve 3. Remote control Selfie, easily control the mobile phone to take pictures remotely (maximum 10 meters). Specification: Overview: It is a kind of BT low-energy product which based on the newest BT 4.0 version. It can chain user's easy-lost and valuable belongings (such as keys, handbags etc.), kids or pets together with smart phones through specified App software within a setting BT connection distance. In the effective distance it can realize the functions of anti-lost, looking for smart phones, self-portrait and voice recording. With this device, your belongings, kids and pets won't leave your attentions any more. Features: 1Anti-lost valuables, when the mobile phone and the anti-lost device exceed the default effective distance, two-way automatic alarm, search the owner to prevent loss (used in the elderly, children, pets, etc.) 2Two-way search, forgot to take the phone? Double-click the anti-lost device, the phone alarms, what did the wallet forget? Press the call in the mobile APP, the anti-lost device will alarm, and follow the voice points to retrieve 3Remote control Selfie, easily control the mobile phone to take pictures remotely (maximum 10 meters). 4Location tracking, you can check the current position of the object on the phone, and you can check the last position after disconnecting Multi-task management, one mobile phone can manage up to 6 anti-lost devices at the same time. Specification: Material: Plastic BT Version: 4.0 Support System: Android 8.0 and iOS 11.0 above Battery: Built-in CR2032 Button Cell Color: Black,Pink,Green, Dark Blue (Optional) Main Item Weight: approx. 8.5g/0.30oz Main Item Size: approx. 4.2*4.0*1.0cm/1.65*1.57*0.39in Package Weight: approx. 13g/0.45oz Package Size: approx. 7.0*5.0*1.5cm/2.75*1.96*0.59in Package List: 1 * BT Tracker 1 * Metal Ring 1 * English User Manual Package List: 1 * BT Tracker 1 * Metal Ring 1 * English User Manual