Quote:
Originally Posted by golfinguy28  ya... i don't know if the watch is good or not, but i CAN tell you that there is no way they can measure swing speed on it accuratly, unless i am misunderstanding it, and you put the watch on the gruond right by your ball and it works like that. But if it is on your wrist... NO WAY it can tell your swing speed. |
I suppose you're right.
It can't MEASURE your swing speed, but it can ESTIMATE it based on 3 accelerometer readings and some calibration data like the length of your
clubs and an index-number basically representing the length of your left arm.
When tested on a launch monitor, the watch was at no point outside a 2% deviation from the launch monitors readings, and the watch was constantly on the low side, so it's not even
plus or minus 2%, ONLY
minus 2%
.
But look at the Apple iPhone to see what is being done with accelerometers. It's not all that impossible, and the rest is just advanced mathematics.