JBL Endurance Race TWS Waterproof Bluetooth Earbuds - Black (JBLENDURACEBLKAM)The JBL Endurance Race TWS Waterproof Bluetooth Earbuds. Black Version. Model: (JBLENDURACEBLKAM). Features: JBL PURE BASS SOUND: these wireless earbuds feature bold sound and rich bass from a 6mm dynamic driver, you won't just hear the musicyou'll feel it. Product Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call