Use for listening to music, playing games, Face Timing, and watching movies Common uses are for in the car (hands-free), listening to music, gaming, conference calls Works with iPhone5 With Kubxlab AmpJacket AMPIPH5ORPCR Acoustic Amplifier Case for iPhone 5 amplify the sound of your iPhone without any energy coming from a battery or other electronic component. It features snap type case made of hard polycarbonate rubberized matte finish that will make the sound of your iPhone much clearer while boosting its volume dramatically when you video chat or share a YouTube video with your friends. The ampjackets patent pending audio channels are precisely tuned to guide and amplify the output from the speaker, enhancing volume and clarity.