#1: Expertly Tuned Graphene Drivers:As graphene’s earliest pioneers, we have used our experience to create a new driver for Liberty Air Bluetooth earbuds that takes full advantage of the material’s remarkable properties. 100 times harder than steel and 35% lighter than traditional driver diaphragms, it oscillates with extreme precision to give your music a wider soundstage with exceptional accuracy and clarity across the entire frequency range.#2: Crystal-Clear Calls:Each earbud is equipped with a microphone that utilizes noise reduction technology. Your voice is optimized and background noises are minimized so you sound louder and clearer on the other end.#3: Up to 20 Hours of Playtime:A full 5 hours of listening on a single charge is extended to a huge 20 hours of playtime with the included charging case.#4: Integrated Touch Controls:Use the earbuds to answer calls and play, pause, and skip music on-the-go.#5: Secure Fit:Liberty Air’s lightweight in-ear design and multiple sizes of EarTips allow you to customize the fit of the earbuds. Crank up the comfort level and enjoy music and stereo calls with superior noise-isolation.