JBL Endurance Peak 3 True Wireless Waterproof Headphones w/Charge Case - BlackJBL Endurance Peak 3 True Wireless Waterproof Headphones with Charge Case. Black version. Features: JBL Pure Bass Sound: Get the most out of your favorite workout playlist with rich bass from a 10mm dynamic driver that delivers bold sound when you need it most. Up to 50 total hours of playback with speed charge: Whether you measure your energy output in miles, pounds, or minutes, the JBL Endurance Peak 3 can match you beat for beat, with up to10 hours