Truly wireless to reach new peaks The freedom of true wireless allows the music to take over and pushes you to higher peaks. 28 hours of combined playback Enjoy more than a day of wireless audio with 4 hours of continuous playback and 24 hours of backup power from the charging case. PowerHook The flexible and secure ear hook design automatically turns the power on/off when putting on or taking off the earphones. These headphones can switch on and off without the need to replace them back in their case every time. Waterproof Featuring IPX7 and sweat proof material the JBL Endurance PEAK headphones are designed to be used in all weather conditions. Durable and made to last no matter the elements. Touch controlsTouch enabled controls allow you to easily manage your music and calls controlling play pause volume mono and stereo modes and tracks order with a simple touch for extra convenience so that you can keep going. Mono and Stereo Mode The simple and intuitive touch sensitive controls on the right bud allows you to choose between mono mode for calls and stereo mode for music playback. Hands-free calls Bluetooth technology enables hands-free calling so you don't have to stop working out when receiving a call. The JBL Endurance PEAK works in mono mode for calls. Smart charging case The rugged charging case protects the headphones and charges them when not in use. Provides over 24 hours of total backup charge with a 10-minute quick charge for 1 hour of music playback. Never hurt. Never fall out. Thanks to TwistLock and FlexSoft technologies these headphones are lightweight and ergonomically built to ensure comfort and stability no matter the workout. With eartips in 3 sizes for a comfortable and snug fit.