adidas adiZero F50
Year Introduced: 2011
Soccer may include a lot of running (a LOT of running), but soccer is not running. Players change direction, change speeds, do all sorts of things that you wouldn't dream of doing on your morning run. So a soccer-specific sensor was going to need to do much, much more. Enter miCoach SPEED_CELL. The midsole-mounted sensor provides data on not only conventional running metrics, but also top speed, average speed, sprints, stride rates, and several other areas that would be of interest to the soccer player. For $280, you got a lot.