My mom bought me one at Sports Authority, and it seems to work pretty well. It did have a stride adjuster. I had to walk 10 steps a couple different times to make sure that I had an accurate measure of my stride length. I used it while walking on the treadmill to be sure that it was getting an accurate distance walked and it agreed perfectly with the treadmill. It's made by Sportline and is labeled "Pedometer 340"