The single super mini earbud is tiny but could still pumps out a powerful sound. Invisible wearing without compromising of music enjoyment. It is compact and lightweight. Single button design for hands-free control. With advanced Bluetooth V4.1 technology, easy and fast paring with almost all smartphones and other devices that is Bluetooth-enabled. The bluetooth earbud comes with ergonomic design. It provides comfortable and secure fit for all works of people. 0.787" L x 0.787" W x 0.6" H