Demanding workouts demand SoundSport Free wireless headphones. They're completely free of wires and packed full of technology. Bose digital signal processing combines with volume-optimized EQ and a proprietary acoustic design to make your music sound clear, full and balanced at any volume. Some wireless headphones pop, crack and hiss from a weak wireless connection, but these earbuds are designed to play reliably and consistently. No matter if your phone is in your hand, your pocket or strapped to your arm. Or in your nearby gym bag. Sweat a lot? Don't sweat it. These earbuds are designed to keep rain and moisture out. Bose StayHear+ Sport tips on each lightweight earbud stay comfortably and securely in place all workout long. And the Bose Connect app helps you track them if misplaced. When you're done working out, the magnetized case also keeps the earbuds securely in place while they recharge. Off a single charge, the earbuds can play for up to five hours, long enough to power you through almost any workout. A fully charged case gives you two additional earbud charges, or up to 10 hours of battery life. Voice prompts talk you through Bluetooth pairing, and you also can use these headphones to take calls and access your phone's Siri or your Google Assistant.