Tennis is more than just another sport for rich people. You can play it in a lot of places to burn calories and get your body in shape. Even if you are not the next Roger Federer or Rafael Nadal, playing tennis can still be a lot of fun. The Babolat Play Pure Drive system is a handy racket that comes with sensors such as an accelerometer, gyroscope, and a microprocessor to collect your data and improve your skills.
The racket collects your data and lets you view it on a smartphone or a tablet. You won’t become the next major champion using a solution like this. At the same time, these rackets tell you more about your performance. They each set you back $399.