Off-speed - SpeedTrac X Radar Gun Hands-Free Speed Gun X-treme

My tennis friends and I tested this device on a tennis court on 2 different days with many placement positions. Some of the better positions were barred because of possibility of ball hitting device. All of us served and all serves were well below our approximately known capabilities (by as much as 50% off)! I measured 100mph at a pro tournament booth and the Speedtrac measured me no higher than 77mph no matter how close the ball passed the device.
Pros: Measures tennis serve speed
Cons: Doesn't measure tennis serve speed accurately

This review was written in the old system and had content requirements that are different than reviews written today.