Omron HJ-112 Pedometer

Discontinued, Replaced with the Omron HJ-329

Omron HJ-112 Pedometer
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In March, 2014, Omron announced that it is replacing the Omron HJ-112 model with the tri-axis Omron Alvita Ultimate HJ-329.

Expert Review of the Omron HJ-112 Pedometer

The Omron HJ-112 was rated high for accuracy by a consumer testing organization. Its design allows it to be worn on your waistband or to be carried in a pocket or purse.

In addition to steps, miles, and calories, it tracks aerobic steps and aerobic minutes per day. This allows walkers to track lifestyle steps and dedicated walking or running steps. It has a 7-day memory for easier tracking. The mechanism is accurate and silent.


  • Fitness pedometer tracks total daily steps and aerobic steps
  • Distance estimate based on step count and the stride length you enter at setup.
  • Calorie count estimate based on your weight, step count, and stride length
  • Exercise timer
  • Designed to be worn with a clip on your waist or carried in a pocket or purse
  • Silent design, it doesn't make any clicking noise
  • Comes with security leash so you won't easily lose it off your waistband.
  • Uses a replaceable CR2032 battery, with a 6-month average lifespan before replacing it.


  • Tested as highly accurate in a study
  • Has a 7-day memory for reviewing your data, resets itself at midnight.
  • Counts steps and aerobic steps so you can track both overall activity and exercise activity.
  • Silent


  • Larger than some pedometers
  • Discontinued

This pedometer has great features for walkers and runners who want to track dedicated walking or running time per day as well as tracking their total daily steps. The aerobic steps function tracks your steps when you walk or run more than 60 steps per minute or continue for 10 minutes or more. It records this as aerobic time and continues so long as you don't pause for more than a minute.

However, you can't stop it or start it yourself, so you can't isolate one workout within a day. If you take three 15-minute walks, you get 45 minutes of credit rather than three separate walks.

The regular step counter counts all steps. Other functions include calories, distance, and a 7-day memory. Having the 7-day memory is essential for those who want to track their steps but may not be able to log each day.

The Omron HJ-112 was one of the first accurate pocket pedometers with a design that allows you to either wear it on your belt or waistband or to carry it in a pocket or purse or pack. The unit must remain perpendicular to the ground, but it is forgiving enough to be tilted or slanted, so long as it is not lying on its face or on its back relative to the ground. This is a big plus to those who have difficulty wearing at the waistband - wearing it on your sock or your bra is a possibility. Omron also debuted the Omron HJ-321 in 2012 which is accurate at all angles, as it has a tri-axis accelerometer.

In tests, the Omron HJ-112 was top-rated for accuracy in treadmill walking and running.

I like the silent functioning of this pedometer -- no rattle or clicking when you wear it. It comes with a leash to ensure you don't lose it, in addition to the clip which I found very secure, it didn't pop off my waistband once all day.

The pedometer uses a replaceable CR2032 battery, with a lifespan of 6 months if you walk 10,000 steps per day.

Other Omron Pedometer Models to Consider

Because the Omron HJ-112 is being discontinued, you may prefer these Omron models:

  • Omron Alvita Ultimate HJ-329 Pedometer
  • Omron HJ-321 Tri-Axis Pedometer
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