The MX 680 in-ear headphones from Sennheiser and adidas provide high-quality audio and durability in a compact and lightweight design. Ideal for the sports or workout enthusiast, the headphones have a sweatproof design for indoor or outdoor use at any time of year. The headphones have an exclusive EarFin design and soft earpads for a comfortable, stable fit that won't fall out.
The headphone cable is reinforced with DuPont Kevlar for terrific durability and flexibility, even in extreme weather. A detachable extension is included for extra slack, and a clothing clip helps to minimize tangles. The cable has an integrated volume control for making quick adjustments, and the standard 3.5mm plug provides compatibility with a wide variety of devices, including the adidas miCoach and all other CD players and MP3 players.