JBL Endurance RUNBT wireless headphones will give you the motivation you need to train harder with JBL's powerful sound. With their FlipHook™ design, they adapt to fit in your ear or behind your ear for greater comfort. The comfortable combination of FlexSoft™ ear tips and TwistLock™ technology means these headphones are guaranteed not to get damaged or fall out. With IPX5 sweat protection, JBL Endurance RUNBT headphones keep up with your every step, so sweat or rain won't ruin your workout. The JBL Endurance RUNBT headphones feature up to 6 hours of playback time with a built-in microphone and remote control for hands-free audio and call control. The Endurance RUNBT Magnetic Headphones fit comfortably around your neck when not in use.