A serious workout deserves serious gear. Get that extra boost with JBL's Pure Bass sound and workout as hard as you want with the JBL Endurance PEAK II True Wireless In-Ear Sport Headphones from JBL. JBL Endurance PEAK II True Wireless In-Ear Sport Headphones feature IPX7-rated moisture resistance, making them sweat and rainproof, and with the Powerhook ergonomic design, they will stay secure and comfortable. Rather than support a general ear type, Powerhook conforms to your ear shape with bendable wire on the ear hook. Sweatproof and waterproof design let you exercise longer and harder, wherever your workout takes you.You can enjoy audio for up to 6 hours on a full charge, with up to 24 additional hours available within the included charging case. Simply place the earbuds inside and close the case to begin recharging them. Thanks to JBL's Dual Connect technology, removing just one earbud from the case gives you access to multiple features. You can quickly take a call, adjust volume, or access your mobile device's digital assistant.