KeyPal Pro is an app controller based on Bluetooth technology. It provides three physical buttons to interact with the specially designed apps for the iOS devices. Depending on which app is running, KeyPal Pro can function as item finder, camera shutter controller, music player or voice recorder. KeyPal Pro is designed to last. The sandwich-like layout of the enclosure consists of three major parts. Between the upper cover and the lower casing is a thermoplastic polyurethane layer, which gives form to the button set as well as the gasket for water resistance. All parts are fastened by only one screw making disassembly easy.