Reflect Contour Bluetooth Wireless Sports Headphones Black. Designed for active lifestyles, these Bluetooth-enabled wireless earphones are equipped with dual lock technology for an uninterrupted listening experience. Fitness fanatics can stay fierce and focused with up to 8 hours of playback featuring the powerful punch of JBL signature sound. Add in the touch and feel of premium quality materials, a sweat-proof design and an easy to use, 3-button, in-line remote, and you'll watch your workouts reach new levels in no time.