SCI-FI INSPIRED DESIGN Unlike any wireless earbuds you have ever seen,Gravastar earbuds are designed for fashion and music lovers.The charging case is made from a zinc alloy material that keeps it safe from scratches and bumps. It also features a physical button and a laser-engraved touch panel that gives it a vibe that's out of this world. Clear Call and Immersive Stereo SoundWith Knowles balanced armatures and 7.2mm dynamic drivers, the hyper-modern Gravastar Bluetooth earbuds bring you a powerful music experience that delivers on all levels - low, high, and everything in between. At the same time, Sirius Pro comes with in-ear detection, enabling you to use them smartly.