Description: Truly Wireless for Sport Cord-free design enables athletes to maximize each and every workout. Waterproof, High-Performance Design for Sport IPX7 Sweat Waterproof, these buds promise to withstand your most rigorous workout and any elements thrown your way. Bionic Hearing Using unique JBL sound and mic technology, Bionic Hearing allows you to hear your surroundings with two sound Technologies C TalkThru Ambient Aware. With TalkThru Technology, music is lowered and speech is amplified so you can easily chat with a workout partner between sets. AmbientAware delivers a more immersive music experience while increasing ambient sounds, providing the safety of hearing your surroundings. JBL Charged Sound Bold sound tuned for sport with rich bass to crush your workout.25 Hours of total battery life Battery life can last for 5-hours per charge, but no need for concern if you're on-the-go. Simply recharge your earphones for another 20-hours playtime with the water-resistant, aluminum charging case. Bluetooth? wireless Easy-to-connect Bluetooth technology delivers a cable-free, zero-distraction performance. Sport Flex Fit ear tips Winged ear tips that are easy to use for maximum security. Aluminum Charging case Featuring a sleek, aluminum sliding design, the charging case has a fabric cord and ensures your headphones are recharged quickly and safely Specifications: Spur specifications: M10*2 Bluetooth version: 5.0 Support Bluetooth distance: more than 10 meters Output voltage: 5V Playing time: 4H Charging time: 1.5H Product color: black Package Included: 1 x True Wireless Flash in-ear sport headphone 1 x Protective sport charging case 1 x Quick start guide 3 Sizes of ear tips