Well, there are lots of different options out there depending on how much you're willing to pay. If you're looking for a no frills pedometer, OMROM makes a good one. This is an example of a no frills pedometer. www.amazon.com/Omron-HJ-112-Digital-Pocket
Now, if you're looking for something with more bells and whistles, then you might consider a Fitbit. A Fitbit will track your steps as well as distance, calories burned, stairs climbed, etc. It costs more money, but if you're looking for a fitness gadget to keep you motivated, you might try the Fitbit. And there are different models of Fitbit. www.amazon.com/Fitbit-Wireless-Activity-Sl
Read the customer reviews (the good and bad) to see which model of pedometer would be right for you. And you do have to decide what features you'd like. If you just want to track steps, then an OMROM will do. but if you want to find out calories burned, etc... then you'll need to pay a bit more.