Really wireless to set new records. With the freedom of True Wireless design, music can take control and lead you to new records. 28 hours of uninterrupted music enjoyment. Enjoy wireless music for more than a day with 4 hours of uninterrupted music playback plus 24 hours of power from the charger. Flexible and secure earphone design: Automatically turns the headphones on and off when you put them off. These headphones can be turned on and off without having to put them back in the station 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 having to recharge your headphones in the next 28 hours (4 hours + 24 hours spare battery). If you want to go into extra time, just 10 minutes of recharging time is enough for another hour of motivating music playback. Thanks to PowerHook technology, JBL Endurance PEAK headphones turn on and off automatically when you put them on or take them off. So he's ready for any workout if you are. Plus, with PowerHook, you can turn off your TWS earphones without having to reach for the charger each time. The JBL Endurance PEAK is waterproof according to IPX7 and provides a pleasant wearing comfort without being able to fall out. The flexible earhook provides additional safety. The JBL Endurance PEAK headphones support mono and stereo and allow you to control music and calls directly from your earphones with convenient touch controls. And when your workout is over, you can easily stow the headphones in the sturdy case.