For a device so small and simple to use, I am very impressed with the capability and reliability of the Pocket Rader. I bought the device to measure the speed of my 13 year old daughter's serve (tennis) and monitor her progress over time. I have found the device to be very effective in doing so. My daughter has also found the device to be a great learning tool, in that now she can relate speed to the "feel" of the serve. In other words, if she uses more racquet speed, drives more with the legs, uses more body rotation.. she sees her serve speed jump. The result has been such that she is improving her technique and using her body more effectively. Bottom line, while I bought this to check her serve speed, I am finding it to provide her with valuable self-learning.
This review was written in the old system and had content requirements that are different than reviews written today.