BOOST YOUR DAY: With up to 35 hours play time, these wireless on-ear headphones are with you while you train-and beyond. A full charge takes 2 hours, and a 15-minute boost gives you extra 2 hours of use. ALWAYS FEEL FRESH: Tough, lightweight and durable. Soft, breathable ear-cup cushion sleeves are detachable for easy cleaning and are filled with cooling gel for those extended workout sessions. NOTHING CAN STOP YOU: These headphones have undergone rigorous testing, just like you. An IP55 rating means they are as happy on dusty trails as they are in heavy rain. PUMP UP YOUR TUNES: Perfectly tuned 40 mm neodymium drivers deliver energizing bass.The closed-back design allows you to keep your music to yourself, whether you’re hitting the treadmill or the beach. FOR SPORTS OR ON THE GO: These Go series headphones are engineered to keep you going. The multi-function button lets you pause your playlist, take calls, control volume, and call upon your phone's voice assistant.