Omron HJ-320 Tri-Axis Alvita Pedometer
- Battery Average Life: 7 days
- Sensor Type: Pedometer
- Item Weight: 0.1 pounds
- Battery Description: Non-Replaceable Battery
Last refreshed Jul 5, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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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ASIN: B008OQS4L4Model: HJ-320Category: Pedometers
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.
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.
Pros and cons
- Small and light enough to forget you're wearing it
- 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 | 0.1 pounds |
| 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 |
Closest rivals on specs
HUYVMAY T6F Kids Pedometer Fitness Watch- Battery Average Life 7 vs 21 days (-67%)
- Item Weight 0.1 vs 0.13 pounds (-23%)
Realalt 3DTriSport 3D Walking Pedometer- Battery Average Life 7 vs 365 days (-98%)
- Item Weight 0.1 vs 0.09 pounds (+11%)
Frequently asked questions
How much activity history does it store?
It keeps a rolling 7-day log of steps and distance, resetting automatically each midnight.