Truly wireless to achieve new records. With the freedom of True Wireless design, music can take control and lead you to new heights. Enjoy 28 hours of uninterrupted music enjoyment. Experience wireless music enjoyment for more than a day with 4 hours of continuous playback plus 24 hours of backup power from the charging case. The flexible and secure earbud design automatically turns the headphones on when you put them on and off when you take them off. This headphone can be turned on and off without having to place it back in the case each time. Free yourself from limitations and look forward to a whole new level of performance with the JBL Endurance PEAK headphones. Enjoy the freedom of a completely wireless workout without needing to recharge the headphones for the next 28 hours (4 hrs. + 24 hrs. reserve battery). If you want to extend your session, just 10 minutes of charging time provides an additional hour of motivating playback. Thanks to PowerHook technology, the JBL Endurance PEAK headphones automatically turn on or off as soon as you put them on or take them off. They are ready for any workout when you are. Additionally, with PowerHook, you can turn off your TWS earbuds without having to reach for the charging case every time. The JBL Endurance PEAK is waterproof according to IPX7 standards, providing a comfortable fit without the risk of falling out. The flexible ear hook adds extra security. The JBL Endurance PEAK headphones support mono and stereo and allow you to control music and calls directly from the earbud using the convenient touch controls. And when your workout is over, you can simply store the headphones in the sturdy case.