Immersive audio: enhanced CSR chip, CVC noise cancellation, and Bluetooth 4.1 technology deliver a robust, wide range of sound with dynamic highs and powerful lows, giving you the best music experience Sweat & water-proof: waterproof Nano-coating protects the headphones during workout; rain, sweat, or shine, these IPX7 waterproof headphones push you further and handle tough training Easy CONTROL: play and pause music, adjust the volume, skip tracks, answer/end calls, and activate Siri or virtual assistant with one-button control on the headphones Longer listening: One charge gives you up to 8 hours playtime so you can listen longer between charges Comfortable and discreet: portable and ultra-lightweight, these discreet Bluetooth headphones stay put during active use and take you comfortably from one place to the next