Beyond the packaging, there's not much to indicate Sennheiser's colaboration with Adidas.
Photo by: Sennheiser
The CX 680 features in in-ear design and a "twist-to-fit" fin to help provide a secure fit. They are priced at $119.95.
Photo by: Sennheiser
The MX 680 is a standard earbud with the TwistFin, though we don't see how that would help with fit in this case. These will go for $79.95.
Photo by: Sennheiser
The OMX 680 offers earloops for a more secure fit during activity. Pricing is set at $79.95.
Photo by: Sennheiser
The PMX 680 adds a behind-the-head neckband to a standard earbud. These headphones will also sell for $79.95.
Photo by: Sennheiser

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