Flexible Design: The Sport X20 earbuds come with adjustable ear hooks that can be stretched and rotated for optimal comfort and stability. With up to 30 degrees of rotation and 4mm of extension, the fit can be customized to your perfect fit. Increased Focus: The Sport X20 earbuds offer powerful noise cancellation that transforms noisy gyms into serene spaces. They block out distracting sounds—from the clanking of weights to loud shouts. Manual tuning and adaptive noise cancellation keep you focused on your workout goals. Boosted Bass: Enjoy the thrill of Soundcore's BassUp technology, powered by powerful 11mm dynamic drivers. Elevate your audio experience for renewed motivation. Proof-All Design: The unique earbud chamber design with Soundcore's exclusive SweatGuard technology creates a submarine-inspired seal that protects internal components from damage caused by water, sweat, and dust. Move without worry. Durable Battery Life: The Sport X20 earbuds offer an impressive battery life of up to 12 hours on a single charge, extending to 48 hours when using the charging case. With fast charging, you can start your workout without delay.