Air Button NFC Android Smart Button, Customizable Battery-free NFC Sticker Shortcut Button for Android device, Samsung Galaxy, HTC, Nexus, Sony, One Plus, LG Smartphones - Double Black NFC Android Button: The Air Button is a small accessory that manages your favorite apps and smartphone functions in one press This smart button has 30+ basic functions and also allows you to create a 'workflow' to chain different functions and apps together Hassle-Free. This NFC sticker has no tangling wires or bulky batteries allowing for a super compact design. Just attach it to the back of your device, register, and use A free native app is available for download from the Google Play Store. It is very user-friendly and intuitive, giving you a high degree of control and customization Sleek, modern, and with good tactile feedback, this NFC sticker button comes in a Single or Double version with 5 selections of colors namely Snow White, Stone Black, Air Blue, Ruby Red and Mustard Yellow