Sennheiser Adidas CX680 and CX680i
The Sennheiser/Adidas CX680 and CX680i were true trailblazers in the realm of fitness in ear monitors. Featuring a unique shark-fin design, these great headpones stay in your ears when working out, running, or engaged in any strenous activity. They also feature:
- Sweat and water resistant construction
- Kevlar® reinforced cables are ultra-durable
- Secure fit in-the-ear canal fit blocks noise


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