Accuracy

• A pedometer is most accurate when a user is moving at more than 3 mph and wearing it on the waistband. If you can, try on a few pedometers at a sports-equipment store and test them while walking and running. Pedometers that use sensor technology are generally more accurate than those with the traditional pendulum switch.
  
  

Size and Shape

• Most pedometers are about the size and shape of a beeper. Larger pedometers have a bigger display, which may be helpful for those who have trouble reading a smaller screen. Find one with a good clip as well, since the pants you wear may vary in thickness.
  
  

Features

• In addition to counting steps, some pedometers also serve as calorie counters, distance calculators, timers and aerobic-movement calculators. If you want your pedometer to reset itself each day, choose one with a clock on it. A cover can help protect it and keep it from resetting itself if you press up against a hard surface.
  
  

Battery Life

• The battery life of a pedometer can vary from six to 24 months. If you choose a pedometer with a shorter battery life, make sure the batteries are easily replaced.
  
  

Price

• Prices of pedometers as 2010 range from roughly $15 to more than $60.