Compatible with Smartphone/tablet with a camera running Android 4.1 or later (some exception may exist) or iPhone/iPad (except iPhone 3GS) running iOS6.1 or later and must have the "Smart Tennis Sensor" App downloaded, available in the App store.
By attaching the Smart Tennis Sensor to your racket, all your shot data is recorded and can be displayed in real-time on your smartphone via Bluetooth. Through the app screen, you can check the swing (shot) type, ball speed, swing speed, ball spin, ball impact spot and other data for every shot.
All recorded data is stored on your smartphone and sorted by shot type. Play reports are automatically created so that you can look back and analyze your tennis game. From the more detailed screen, you can view your play data over time.
This app also allows you to share your stats and compare them with other friends or players around the world. With many other features and easy to use application this accessory is sure to help improve your game to the next level!
As many others I have read on Internet, it does not turn on, battery problem... Waist of money!
I was skeptical about it for some of the reviews I read online, but I tried it and I haven't had any problems with it. It's a great little gadget that I use to see my shots. The app has tons of features but I specially like the live video option to see my game. I'd definitely recommend it.