Tennis, hockey, golf, football, baseball, as long as you are a fan of any of these sports, you will definitely love this sports speedometer. It can even provide training assistance when you practice alone, telling you your swing speed, catching speed, pitching speed, and improving your training results. It can make sports interesting, compete with partners, and make greater progress. This ball type speed tester has big red LED display and can read data through voice, storing you last first 10 data, so you no longer have to stop to check your performance during practice. This training assistant is suitable for players, coaches, or amateur enthusiasts of all ages and is the best gift for ball games.