JBL Endurance Sprint (Black) Waterproof Wireless Sport In-Ear Headphones 8 hours of wireless playback with Speed Charge battery Mag Hook Never hurt. Never fall out. Waterproof Touch controls Hands-free calls Let nothing stop your workout. Wireless and Ipx7 waterproof, the JBL Endurance Sprint headphones are always up for a run, and with Speed Charge you can get an hour of listening time after charging the 8 hr battery for just 10 minutes. Supremely comfortable with Flex Soft ear tips and Twist Lock technology, these secure fit buds were designed from the ground up to amplify your workout. They’re guaranteed never to hurt or fall out, while touch controls let you easily manage music and Mag Hook lets you secure them conveniently close at hand when you’re done using them. 8 hours of wireless playback with Speed Charge battery Bluetooth wireless allows you to stream high quality music without the worry of messy wires interfering with your workout. In just 10 minutes, you can power your headphones for an hour of use. Mag Hook Secure fit ear hook design provides ultimate stability during workout. When not in use the Magnetic hook provides a convenient storage solution for your headphones. Clip on your shirt or around your bag for easy management. Never hurt. Never fall out. Thanks to Twist Lock and Flex Soft technologies, these headphones are lightweight and ergonomically built to ensure comfort and stability no matter the workout. Waterproof Featuring Ipx7, the JBL Endurance Sprint are designed to be used in all weather or sport conditions. Durable and made to last, no matter the elements. Touch controls Allows you to easily manage your music and calls controlling volume, play and pause and track order with a simple touch for extra convenience, so that you can keep going. Hands-free calls Bluetooth technology enables hands-free calling, allowing you to focus on your workout.