Omron HJ 320 Instruction Manual

The Omron HJ 320 is a digital pocket pedometer designed to accurately count daily steps, calculate distance traveled, and estimate calories burned. It features a large, easy-to-read LCD display, a secure clip for attachment to clothing, a 7-day memory function, and an auto-reset at midnight. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Setup & Installation 3. First-Time Use 4. Specifications 5. Controls and Display 6. Daily Operation 7. Memory & Data Review 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Main unit with LCD display, Belt clip, Battery (CR2032), Instruction manual.

Feature	Description
Step Counter	Accurately counts steps using a 3D sensor
Distance Calculator	Calculates approximate distance based on stride length
Calorie Estimator	Estimates calories burned based on steps and weight
7-Day Memory	Stores daily step data for one week
Auto Reset	Automatically resets step count at midnight (12:00 AM)
Large LCD Display	Easy-to-read screen showing steps, distance, and calories
Secure Clip	Clips firmly to waistband, pocket, or belt
Battery Indicator	Shows remaining battery life
Mode Button	Cycles through display modes (Steps, Distance, Calories)
Reset Button	Manually resets the daily step count

Setup & Installation

Unpack and inspect contents. Ensure all parts are present.

Insert Battery: Open battery compartment on back, insert CR2032 battery with correct polarity (+ side up).
Attach Clip: Slide the pedometer onto the belt clip until it clicks into place.
Set Stride Length: Measure your walking stride length for accurate distance calculation.
Set Body Weight: Enter your weight for accurate calorie estimation.

WARNING! Keep battery away from children. If swallowed, seek medical help immediately.

First-Time Use

Power on the pedometer; follow setup prompts.

Set Time: Ensure clock is set correctly for auto-reset function.
Enter Stride Length: Use MODE and SET buttons to input your average stride length (in cm or inches).
Enter Weight: Input your body weight (in kg or lbs) for calorie calculation.
Attach to Clothing: Clip the pedometer vertically to your waistband, belt, or pocket.
Start Walking: The pedometer will automatically begin counting steps.

CAUTION! For accurate readings, wear the pedometer upright and firmly attached.

Specifications

Model: Omron HJ-320.
Sensor Type: 3D Tri-Axis Sensor.
Measurement: Steps, Distance (miles/km), Calories (kcal).
Memory: 7-day memory storage.
Display: LCD with backlight (on some models).
Battery: CR2032 Lithium battery (approx. 6-month life).
Operating Temp: 0°C to 40°C (32°F to 104°F).
Dimensions: 58mm (W) x 38mm (H) x 16mm (D).
Weight: Approx. 21g (including battery).

Controls and Display

Access functions via MODE and SET buttons. Front Panel: MODE button, SET button, RESET button (small recessed button).

Display Icons: Step count icon, Distance icon, Calorie icon, Battery icon, Memory icon.

Mode Cycle: Press MODE to cycle through Steps -> Distance -> Calories -> Memory Review. Settings: Press and hold SET to enter setup for time, stride length, and weight. Reset: Use a pointed object to press the RESET button for manual daily reset.

Daily Operation

Wear the pedometer daily to track activity.

Attach Correctly: Clip vertically to waistband, ensuring it is secure and upright.
Check Reading: Press MODE to view current steps, distance, or calories.
Auto-Reset: The step count will reset to zero automatically at midnight.
Manual Reset: If needed, press RESET button to clear current day's data.

Tip: For best accuracy, calibrate your stride length on a measured distance.

Memory & Data Review

Stores daily step data for past 7 days.

Enter Memory Mode: Press MODE until memory icon appears.
Review Days: Press SET to scroll through data for the last 7 days (Day1 = today, Day7 = 7 days ago).
View Data: Each day shows total steps, distance, and calories.
Exit: Press MODE to return to normal display.

Note: Memory data is retained even if battery is removed or replaced.

Maintenance

Replace battery when indicator shows low. Clean with dry cloth only.

Battery Replacement: Open battery cover, remove old CR2032, insert new battery with correct polarity.
Cleaning: Wipe casing with a soft, dry cloth. Do not use liquids or chemicals.
Storage: Store in a cool, dry place away from direct sunlight and extreme temperatures.

CAUTION! Do not disassemble the unit beyond battery replacement. Avoid impact and water.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Dead battery	Replace CR2032 battery.
Inaccurate step count	Incorrect wearing position	Attach vertically to waistband; ensure secure clip.
Distance calculation wrong	Incorrect stride length setting	Re-measure and re-enter stride length in setup.
Memory not showing data	Unit not used for that day	Data is stored only for days the pedometer was worn and active.
Buttons not responding	Battery low or unit locked	Replace battery; ensure buttons are pressed firmly.

Reset: Remove battery for 30 seconds to reset all settings to default.

Service: 1-800-634-4350; www.omronhealthcare.com