A company called Smash Wearables unveiled its unique wearable device called Smash, which pairs to a mobile app to track user’s tennis game. Relying on built-in sensors, the lightweight wristband takes note of one’s forehand, backhand, volley, first and second serve, and sends that information to the smartphone. The application then analyzes this data, compares it with best practices and returns advice on how to improve the game.

Smash can measure number and type of shots, racket head speed and momentum, amount of spin, wrist rotation, stroke trajectory, impact point and technique consistency.Smash Wearables says its device is designed for all kinds of, and will work whether you’re hitting with friends, practicing drills, playing matches or if you’re a young player on the way up. According to the company, the system feels like having a coach with you every time you play. You will learn new things, get motivation, track your progress, and finally share things with your buddies.

Smash can measure number and type of shots, racket head speed and momentum, amount of spin, wrist rotation, stroke trajectory, impact point and technique consistency. The device weighs less than 15 grams, offering 6-8 hours of playing time. It comes with 3 different sizes — S, M and L — and there’s also an LED for status and notifications.

Going forward, Smash will get its SDK to allow third-party developers to connect to the wearable and extend its functionality with other apps. The Kickstarter campaign is looking to raise $200,000; the single Smash unit could be yours for $129.