Omron HJ-320 Tri-Axis Alvita Pedometer
- Pedometer
- Plastic
- Pedometer
- 1
- Better rated than 70%
- More reviewed than 64%
A small, simple pedometer that reads walking steps reliably for most users, though it can miss irregular movement and struggled badly for at least one walker user.
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How it ranks among the 33 pedometers we track
4.2★ across 1,100 Amazon ratings, Bayesian-smoothed toward the category average.
1,100 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 33 pedometers we track - how the scorecard works · full pedometers data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jul 5, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Omron HJ-320 is a clip-on or pocket pedometer that uses a tri-axis sensor to count steps and distance in any orientation, keeping a rolling 7-day activity log and resetting automatically each midnight.
Reviews split along one line: for a steady walking gait it reads accurately for most people, but it needs several consecutive steps in rhythm to register, so stop-start movement like housework counts poorly. One reviewer using a walker found the readings off by as much as 50 to 90 percent.
- Tri-axis sensor counts steps in any position
- Stores 7 days of activity data
- Resets automatically at midnight each night
- Works clipped to clothing or loose in a pocket
Who it's for
Anyone wanting a simple, no-frills step counter for regular walks, with a week of stored history, gets straightforward use from this. It's not the right fit for tracking irregular movement like chores, or for anyone relying on a walker for mobility.
What buyers say
From Amazon customer reviews.
Reviewers repeatedly praise its small size, easy setup and accurate step counts during steady walking, along with the 7-day memory as a simple motivator. Complaints center on it needing a walking rhythm of several steps to register, which undercounts chores and other stop-start activity, and one reviewer using a walker found the readings off by 50 to 90 percent.
Strengths and trade-offs
Drawn from this product's published specifications.
- Small and light enough to forget you're wearing it
- Reads accurately for steady walking, per most reviewers
- 7-day memory adds a simple record to check progress against
- Works clipped to clothing or loose in a pocket
- Needs a consistent walking rhythm to register steps reliably
- Undercounts stop-start movement like housework
- Accuracy dropped sharply for one reviewer using a walker
Specifications
| Brand | Omron |
|---|---|
| Model | HJ-320 |
| Dimensions & fit | |
| Item Weight | 1.6 ounces |
| Power & efficiency | |
| Battery Average Life | 7 days |
| Battery Description | Non-replaceable battery |
| Construction & materials | |
| Material Type | Plastic |
| Color | White |
| Compatibility & installation | |
| Compatible Devices | Smartphones |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Sensor Type | Pedometer |
Other Omron pedometers
How it compares
This product against the closest alternatives we track in pedometers.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Omron HJ-320 Tri-Axis Alvita PedometerThis product | 4.2 / 5 | 1,100 | 4.1 / 5 |
| 3D Pedometer for Walking3D | 4.0 / 5 | 9,100 | 4.3 / 5 |
| 3DFitBud Simple Step Counter Walking 3D Pedometer by 3DActive with Clip3DFitBud | 4.2 / 5 | 23,000 | 4.1 / 5 |
| Realalt 3DTriSport 3D Walking Pedometer with Clip & StrapRealalt | 4.1 / 5 | 12,100 | 4.1 / 5 |
| Pedometer Watch Senior Friendly No App/Phone RequiredPedometer | 4.0 / 5 | 4,400 | 4.0 / 5 |
Similar pedometers from other brands
Questions about the Omron HJ-320
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How accurate is the Omron HJ-320?
Most reviewers found it accurate for steady walking, though it can undercount irregular movement and one reviewer using a walker saw large discrepancies.
How much activity history does it store?
It keeps a rolling 7-day log of steps and distance, resetting automatically each midnight.
Does it have to be clipped on to work correctly?
No, reviewers report it reads accurately whether clipped to clothing or carried loose in a pocket.