• Jbl pure bass sound gives you enough bass to give your whole body a boost and get that extra push right when you need it the most..
• Product Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ears.
• With 30 hours of playback (6 hours in buds/24 hours in case), you’ve got the extra inspiration it takes to make you go that extra mile..
• The endurance peak ii powerhook design lets you adjust the headphone to your size and comfort level..
• With dual connect you can take calls, adjust volume, or use your voice assistant on either ear, so you can stay flexible and never mess with your momentum..
• Hands-free stereo calls and voice assistant access lets you keep in contact with your people and stay in control of your playback without ever interrupting the flow of your workout..
• Power source type: Battery-Powered.
• Wireless communication technology: Bluetooth.

JBL Endurance Peak II true wireless headphones deliver JBL Pure Bass sound to fuel your workout, while providing comfort and connectivity to keep you going strong. Get next-level motivation with 30 hours of combined battery life, starting from the moment you wear them, thanks to the Powerhook. Intuitive touch controls allow you to take hands-free calls and access your voice assistant, while dual connect ensures you’ll always be in control as the earbuds work independently. Their ergonomic fit and sweatproof/waterproof design let you exercise longer and harder, wherever your workout takes you. Troubleshooting: Charge the headphones fully before use and use the correct adapter which came with the headphones. 2While these headphones are designed to fit snugly and comfortably in ears, customers ears do vary in size which can affect this. Included in the box are three different silicon ear-tips customers can change out to find that perfect/customized fit. Please make sure that they are not overlooking these when opening the box. These are true wireless headphones that use Bluetooth connectivity. Bluetooth connectivity can be variable based on the device being used, environmental conditions, etc. Bluetooth should deliver up to 30 feet of wireless range but can be variable depending on the environment and things like walls, other electronic devices, etc. Please make sure you have updated the device to the latest software version including the most updated version of Bluetooth, as well as the JBL headphones app to calibrate the best sound quality for the headphones as well as connectivity. Again, please make sure you have the headphone fully charged before using the included cable. Please ensure the headphones are properly sitting in the case for them to charge. There are lights to indicate that the headphones are charging as specified in the attached QSG. Please note that battery performance depends on the usage of the headphone.