Smart rackets are nothing new. They cost a bit more, but they allow you to monitor your stats on your mobile device or computer. Shot Stats Challenger happens to be a smart add-on for your tennis racket that lets you analyze and visualize your tennis game. It fits on any tennis racket and reveals information about your swing. You can sync it with your computer or phone to view and track your improvement over time.
Challenger provides standard vibration dampening but weighs less than 3 dampeners. It lets you track, review, and share your data with others. It is impact/weather resistant and has a clear display. You can control it using simple touch. The device offers 4+ hours of battery life. It is seeking funding on Kickstarter.