InStructIon MAnuAL
HJ-321 Step counter Walking style
HJ-321-APBK 5338795-5A
IntroductIon
Thank you for purchasing the OMRON HJ-321 Step counter.
This Step counter features advanced 3D Smart Sensor technology - so it knows exactly when you’re taking a step. It’s more accurate than other step counters which use a simple pendulum design. Use this in your pocket, bag or on your hip for added convenience. The seven day memory helps you keep track of your daily activity
to help you reach your fitness goals. Use this unit everyday to monitor your fitness achievements!
Your Step counter comes with the following components:
Step counter
Battery (CR2032 installed) Screwdriver
Holder
Instruction Manual
Please read this instruction manual thoroughly before using the unit. Please keep for future reference.
IMPortAnt SAFEtY InForMAtIon
To assure the correct use of the product basic safety measures should always be followed including the warnings and cautions listed in this instruction manual.
SAFETY SYMBOLS USED IN THIS
INSTRUCTION MANUAL
Indicates a potentially hazardous situation
WARNING which, if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation
which, if not avoided, may result in minor or 
CAUTION moderate injury to the user or patient or damage
to the equipment or other property.
OpERATING THE DEvICE
Contact your physician or healthcare provider before beginning a weight reduction or exercise program.
Keep the unit out of the reach of young children. The unit contains small pieces that may be swallowed. Immediately contact your physician if any piece is swallowed.
Please use caution when wearing the unit around your neck so as to avoid possible strangulation. Do not place the unit around the neck of children.
If battery fluid gets in your eyes, immediately rinse with plenty of clean water. Contact a physician immediately.
Read all information in the instruction manual and any other literature included in the box before using the unit. Operate the unit only as intended. Do not use for any other purpose.
If battery fluid gets on your skin or clothing, immediately rinse with plenty of clean water.
Do not insert the battery with the polarities in the wrong direction.
Do not throw the battery into fire. The battery may explode.
Dispose of the device, battery, and components according to applicable local regulations. Unlawful disposal may cause environmental pollution.
CARE AND MAINTENANCE
Do not disassemble or modify the unit. Changes or modifications not approved by Omron Healthcare will void the user warranty.
Do not subject the unit to strong shocks, such as dropping the unit on the ground.
Do not submerge the unit or any of the components in water.
KnoW Your unIt
Front of unit
Display
Low battery
indicator 
set /● button |
mem /▼ button |
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mode /▲ button |
NOTE:
Remove the protective film from the face of the display.
Back of the main unit
Strap attachment (Strap not included)
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Battery cover |
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Battery cover |
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screw |
Components |
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Holder |
NOTE: |
Attach/remove the holder |
When attaching the |
as illustrated below. |
holder, do not grip it |
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strongly at the top and |
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bottom. |
StrIdE LEnGtH MEASurEMEnt
Measure your stride length before setting the step counter.
How to measure your stride length
1. Walk 10 steps with your normal stride as illustrated below. 
5.5 
2.Measure the distance from START to END in meters.
3.Calculate your stride length by dividing the total distance by 10.
Example:
Total distance = 5.5 m
5.5 m ÷ 10 = 0.55 m (55 cm)
SEttInGS
The unit comes with the battery installed. When you use the unit for the first time, follow the steps below. For setting range details refer to “SPECIFICATIONS”.
NOTE:
If the initial settings are not correct, the measurement results may not be accurate.
1.press and hold 
, 
or 
.
After the following display, “lb” and “kg” flash on the display.
2. Setting the weight units.
A) |
Press |
or |
to |
A) |
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select the mode. |
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B) |
Press |
to confirm |
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the setting. |
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3. To set the height/stride |
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B) |
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length unit, repeat steps A) |
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and B) in step 2 above.
4. To set the distance unit, repeat steps A) and B) in step 2 above.
5.To set the time display, repeat steps A) and B) in step 2 above.
6.Setting the weight.
A) |
Press |
or |
to |
A) |
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select the desired value |
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for a setting. |
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• Press |
( |
) |
B) |
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to advance (go back) |
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one. |
( |
) |
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• Hold |
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down to advance (go |
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back) rapidly. |
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B) |
Press |
to confirm the setting. |
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7.To set the height, repeat steps A) and B) in step 6 above.
8.To set the stride length, repeat steps A) and B) in step 6 above.
9.To set the hour, repeat steps A) and B) in step 6 above.
10.To set the minute, repeat steps A) and B) in step 6 above.
All the settings are completed.
Adjust the settings
1.press and hold 
.
“lb” or “kg” flash on the display.
2.Follow the procedure from step 2 of “SETTINGS”.
uSInG tHE unIt
The unit accurately counts in a pocket, bag or anywhere you want to put it. The unit may be placed in the upper front pocket of your clothing, in the front pocket of your pants, in a bag, or attached to your belt or pants, or hang it from your neck.
1.Simply bring the unit with you wherever you go.
NOTE:
In order to avoid counting steps that are not part of a walk, the unit does not display the step count for the first 4 seconds of walking. If you continue walking for more than 4 seconds, it displays the step count for the first 4 seconds and then continues to count.
2.press 
to read the data.
The unit may not count steps correctly in the following conditions:
1.The unit moves irregularly.
••When the unit is placed in a bag and a bag moves irregularly.
••When the unit swings from your belt, the top of your pants or a bag.
2.Walking at an inconsistent pace.
••When you shuffle or wear sandals.
••Starting and stopping or other forms of inconsistent walking.
3.Up and down movement.
••Standing up and/or sitting down
movement.
•• Playing sports other than walking.
••Ascending or descending movement on stairs or on a steep slope.
4.vibrations from a moving vehicle.
•• Such as riding a bicycle, automobile, train or bus.
5.Walking extremely slowly.
rEAdInG tHE currEnt dISPLAY
Press 
to change the display.
Step count display
Distance display
Calories display
Aerobic steps display
Time display
Calories
By measuring the intensity of your activity, the unit can calculate the amount of calories burned.
Aerobic steps
Aerobic steps are the physical exercise that helps us stay healthy. Aerobic steps are counted separately when walking more than 60 steps per minute and more than 10 minutes successively. If a rest of less than 1 minute is taken after a continuous walk of more than 10 minutes, this will be regarded as part of “a continuous walk”.
The battery saving mode
After 5 minutes with no button being pressed, the display will automatically turn off. However, the unit continues to count steps. This mode extends the battery life.
Press 
, 
or 
to activate the display again.
MEMorY FunctIon
The unit stores 7 days of measurements for steps, distance, calories and aerobic steps.
The current day's data is automatically stored in memory when the time reaches 0:00 (12:00AM). The display will return to 0.
NOTE:
The time must be correctly set in the unit.
1press 
to select the type of measurement you want to see (steps, distance, etc.).
2.press 
to view the results (days 1-7) in memory.
The display changes with each press of 
as shown below.
••Keep 
pressed to automatically change the display until the current display is displayed.
NOTE:
If no button is pressed for more than 1 minute, the display will return to the current day's data.
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