Operated with a simple wave of the hand, the JBL Reflect Response earphones are the world's first wireless sport earphone with customizable motion sensor control. Now, you no longer have to stop a workout to change tracks or take a call with hard to use buttons. JBL Reflect Response earphones also feature up to 10 hours of legendary JBL sound with an ergonomic fit neckband and specially designed earpieces that stay in place regardless of how intense your workout routine is. Key Features Rechargeable Battery Features a rechargeable battery for convenient portability and extended playback time. Sweat-Proof The rugged sweat-proof design is ready for anything and delivers on JBL's legendary sound with no-compromise. Angled Ear-Tips Secure, ergonomic ear-tips stay put during the most intense of workouts. Bluetooth Connectivity Allows you to wirelessly stream music through any Bluetooth enabled device.