The tracker can chain your easy-lost & valuable belongings together and work with smart phone to prevent loss. The tracker is also a remote control of your smart phone camera for self-portrait The tracker is a kind of Bluetooth 4.0 Low Energy product which works through iTracing app. In addition, the tracker can also provide a last seen pindrop on map to help you recover your items and search your cars in parking site Compact size and lightweight design and low energy consumption. Supports Bluetooth 4.0 and the effective range is up to 25m.