Feature: Connected to the Bluetooth function of the mobile phone, the two-way search function can connect 3 trackers at the same time. In the connected state, when the tracker exceeds the effective distance range, the mobile phone and the tracker simultaneously report. On the phone, you can check the map location when the tracker is disconnected. Provides the DND function, which can be set to mute during a certain period of time to prevent work and other important time from disturbing. Control the phone shooting function through the tracker, remote self-timer. Control the phone recording function through the tracker. Specification: Materials:Plastic Color:Black, White, Blue, Pink, Green Quantiti:1pcs Shape: Square(37*37mm) Bluetooth Version:Bluetooth 4.0 Low Energe consumption Compatible Devices:iPhone4S/5/5S/5C,iPad & Mini,iTouch 5,iPad3/4 & Android system,Bluetooth 4.0 Smartphone(Android 4.3 version and up-grade version) Working Distance:25m(Outdoor environment) Battery:CR2032 Lithium Coin Battery Package Included: 1 x Anti-lost Tracker Retail Box Included. Packed Safely in Bubble Bag.