I have recently purchased the Sportline 347 for myself and a friend. One of the products never worked, right out of the package. I even tried a different battery. The other unit worked; however, it does not easily stay in place during the course of a day. I have an office-type job thus I am not very active during the day and it still manages to fall off. If it falls off and bumps anything, even from a short fall, you can pretty much guarentee your steps for the day are lost. Both of these pedometers are going back to the store. I have already ordered the SW 701-Digiwalker. We'll see how they fair.