Adjustable, secure-fit earhooks are customizable with multiple eartip options, and are made to stay in place, no matter how hard you go. And if you’re in need of extra juice, use 5-minute Fast Fuel for 1 hour of playback when battery is low. Reinforced design for sweat and water resistance helps you make it through next-level training. The streamlined round cable is engineered to minimize friction whether you have them on or off your ears, and the Apple H1 chip powers quick connectivity and “Hey Siri” voice activation.