Add some fun and excitement to your workouts by listening to music with the Sennheiser CX 680 headphones. Designed to excel, these Sennheiser sport headphones feature an EarFin holding mechanism that adjust to your ears with secure fit. Block outside noise and totally immerse yourself in music, this Sennheiser headset features in-the-ear canal fit. To get rid of tangles and improve wearing comfort, these Sennheiser sport headphones come with a detachable extension cable. The Sennheiser CX 680 headphones have the ability to energizing and high-output sound. This Sennheiser headset is water as well as sweat-resistant and can take most of the environmental brunt.