As Cooper Perkins team members created the market and the underlying rear hub-based power measurement technology with a hub-based system years earlier, Saris asked the team to develop a crank-based approach that is just as accurate but less expensive than the original. Working with Saris engineers, the Cooper Perkins team developed the original technology (US Patent no. 7,975,561), designed the product, and engineered the production assembly and calibration equipment for this high-end bicycle power meter. The Power-Tap C1 device accurately measures and records a cyclist’s power output, in Watts, during a training ride or a race. It was introduced to the market in late 2015 with great success.