Gecko Bluetooth Multi-function Smart Tag for iPhone iPad iOS only, GT101 Program 2 smart actions: remote camera trigger, Music Play, Music Pause, Music Next/Back, Voice Recording Stick a Gecko Tag on your door or window and get alerted on your smartphone if the door opens or closes (works within Bluetooth range) Bluetooth Low Energy Device with 50-100ft line of sight range Compatible with iOS devices 1 year average battery life (depending on usage)