Bests & Worsts Reviews from Amazon

I like all the features of this small, light-weight pedometer, but I was most interested in testing the accuracy when measuring steps. I played with many variables when testing, such as walking fast, walking slow, changing stride length, varying the speed of the steps within my sample, etc. I found none of these things really mattered when it comes to accuracy. What really matters, and significantly, is where you place this device. Here are my results: (1) In my pocket, accuracy was terrible. It could be off as much as 30%. (2) Clipped at various locations on my belt, or on the neckline of my shirt, results were quite good - inaccuracy was between 2-4%. However, when I placed the device on a lanyard around my neck, the results have been great - inaccuracy of less the 0.5%. That is extraordinary for what I understand is a one mechanical pendulum device. This morning I recorded five separate 400 step samples and took the step readings after each. Here were the readings: 402, 402, 401, 402, 400. In all 30+ tests I have run this week, the inaccuracy is always on the high side. In conclusion, if placed in a proper location, this is a very accurate and valuable tool for keeping track of your steps, miles, time duration, speed, and calories burned. It's cool and I hope I keep putting it to good use.