Actually, I've owned mine for about 3 years. It reads out swing speed. You can also set the club you are swinging (e.g. 1 wood) and it will give you an estimated carry distance for a well struck shot. Set it about 3 feet behind the ball on the target line, and it will measure very consistently, in my experience.

The swing speeds seem accurate and comparable to those we calculated using a high speed research video camera. The carry distances seem about right based on my experience using it at the driving range (driving range balls fly about 20 yards less than regular balls at the driving range I use).

I found it very helpful to find my most effective swing method (I read and tried everything). Anyhow, I raised my 1 wood swing speed from about 80+ mph to 105mph rather quickly (the corresponding 5 iron ended up at 85+ mph). FWIW, I'm in my mid 60s and only 5'7" -- good swing speeds for a little geezer.

I suggest using it in the back yard to try different swing methods. At first you may swing worse because you will over swing in trying to swing faster. After a few 5 minute a day sessions, I calmed down and started methodically trying different things such as stance, tempo, back swing paths (and just plain swinging harder in control). Then the progress was unbelievably fast and I exceeded my expectations greatly. For me, the secret was to use my right hand definitely and effectively (instead of trying to "keep it out of the swing") -- and use more "arms" -- just let the body react to what my arms were trying to do. The new swing method translated into far longer hits (due to the 105mph) and better consistency off tight lies (due to the practice remaining stable at those high speeds).

Just one person's experience. 5 stars

A dachshund with one bad eye could give you the same inconsitent and wildy inaccurate readings as this pricey gem. The Beltronics customer service was actually even worse than the readings of the unit. I should have spent the cash on a lesson with my golf pro. 1 star

I was curious about my clubhead speed so I bought one. I dont hit the ball that far so I know my clubhead speed would be low. Avg about 95 mph with the 1 wood. I also liked the feature that it tells you the yardage with a certain club. So I picked up a 6 iron which I usually hit about 160-170 yds (if I hit the sweet spot) and swung that a few times. It said distance was 132 yds. Did that a few more times and still in the 130s. Then I selected PW on the unit. I can hit that about 110 yds. I took some nice good swings and it said 83 yds on the unit.

In conclusion , I dont think this product is very accurate. I KNOW I can hit a 6 iron 165 yds and a PW over 100. Ive done it at the range and on the course.

Since the yardage is way off on the device , makes me wonder how accurate the mph is. Might be putting it on EBay soon. 3 stars