Oregon Scientific SE331 Merkblatt

© 2010 Oregon Scientific. All rights reserved.

300102655-00001-10

Tap

To  view  total  calories  burned  since  last 
reset:  tap  on  lens  when  screen  shows
default time display.

 Tip  If tap on lens has been enabled (refer to “Setting mode” section), the below 4 screens 
will automatically toggle.

Exercise time

Current heart rate

Calories burned (kcal)

Fat burned (g)

This  watch  enables  you  to  select  a  target  HR
zone according to your fitness goals.  By setting 
the target HR zone and personal data, the watch 
can monitor how well you do. The watch will send
out  visual  and  audible  alerts  if  you  are  pushing
yourself too hard or need to put more effort in.
For details of HR zones, refer to “Understanding heart rate” section in this manual.

If alert has been enabled and heart rate zone has been set:

 / ABOVE ZONE!

2

You have gone above your upper HR limit

 / BELOW ZONE!

1

You have gone below your lower HR limit

Remember, these alerts are based on a calculation of your maximum heart rate and the HR 
zone you selected.  As such, it is an estimation and is only for guidance.  If you feel you are 
working too hard, most likely you are.  Adjust the HR zone to one that works for you.

Heart rate is an indicator of the intensity of the exercise on your body.  It is a useful tool for 
determining how effective a work-out is.
This watch uses an estimation of your maximum heart rate (220 - age = MHR) to arrive at 5 
HR zone settings specific to you.

Fat
burning

50% - 60%

For beginners and those with health
problems. Gets body used to exercise 
and improves health.

Brisk walking

61% - 70%

Improves heart’s ability to deliver 
oxygen. Calories burned mostly from
stored body fat.

Jogging, easy 
cycling.

Aerobic

71% - 80%

Increases endurance and muscle 
strength. Breathing is faster and
deeper promoting proper circulation of
oxygenated blood.

Running, 
aerobic dance, 
jumping rope.

Anaerobic

81% - 90%

Builds muscle and enhances speed, 
power and performance levels. Body
requires more oxygen than it can
provide.

Weight-lifting, 
resistance
machine.

91% - 100%

For athletes.  Vigorous training, usually 
done in short bursts to enhance power
and performance.  May increase chance 
of injury and soreness.

Sprinting

*The upper and lower heart rate limits are calculated by multiplying your maximum heart rate
(MHR) by the percentages. 

It  is  important  to  pace  yourself,  especially  if  you  haven’t  exercised  for  a  while.    Start  off 
slow, aiming for the lowest range (50%-60%).  As you become more comfortable, challenge 
yourself by increasing in speed and duration.

To  benefit  most  from  your  work-out,  determine  your  fitness  goal  and  exercise  at  a  proper 
intensity. The most common zone range is from 50% to 80% of your maximum heart rate.
This is where you achieve cardiovascular benefits, burn fat and become more fit.

Remember, if you rush in too quickly and push your body too hard before it’s ready, it can be 
counterproductive.   You can hurt your muscles / tendons and may even result in injury and 
be a real step back from your goal.

 iMpOrTanT  Always warm up before exercise and select the HR zone setting that best
suits your physique.  Exercise regularly, 20 to 30 minutes per session, three to four times a 
week for a healthier cardiovascular system.

 warning  Determining a suitable exercise intensity is a critical step in the process towards
an efficient and safe training program.  Please consult your doctor or health professional to 
help you determine exercise frequency and duration appropriate for your age, condition and 
specific goals.

1.  Press MODE/- repeatedly to select “MEM”.  After 2 seconds, display will show the time 

and date of the most recent exercise session recorded or “NO RECORD” if there is no 
data.

2.  Press +/ST/Sp to navigate to desired record.
3.  Tap on lens to toggle through the displays related to selected exercise session.

Total time taken for entire exercise

Effectiveness of training:

Amount of time when heart rate was within selected
HR zone (achieved intended goal)

Maximum heart rate

Average heart rate

Total calories burned (kcal)

Total fat burned (g)

To return to previous screen at any time: Press MODE/-.

This watch can contain data for up to 99 exercise sessions.  Individual memory cannot be 
selected and deleted. The watch only allows for all data to be deleted.

1.  Press MODE/- repeatedly to select “MEM”.
2.  Press +/ST/Sp repeatedly until “DELETE” will be displayed.
3.  Press MODE/- to confirm.

DONE indicates the record has been cleared.

MODE/-

+/ST/SP

MODE/-

When  starting  an  exercise  and  memory  is  full,  “FULL”  will  be  displayed,  followed  by 
“DELETE”.

•  Press MODE/- to delete all records

OR

•  Press +/ST/Sp to ignore and start an exercise without recording data for it.

Press EL/LOCK. (Press any key to extend backlight for another 3 seconds).

 nOTE  The backlight function will not operate if “ ” is displayed.

When time is displayed, press ST/Sp/+ to activate / deactivate beep tone.

indicates beep tone is deactivated.

If the battery power of your watch or chest belt is low, the watch will display:
watch 

Chest belt 

“HR BELT LOW BATT”

1.  Use a coin to open the

battery  compartment
lid  by  turning  it
anticlockwise.

2.  Remove

the

old

battery  and  insert
a  new  CR2032,  3V 
lithium battery.

3.  Secure  the  lid  by 

turning

the

coin

clockwise.

1.  Use  a  coin  to  open  the  battery

compartment  lid  by  turning  it
anticlockwise.

2.  Remove  the  old  battery  and

insert a new CR2032, 3V lithium 
battery.

3.  Secure the lid by turning the coin 

clockwise.

 iMpOrTanT  Remember to set the profiles after every battery replacement or reset.

Press and hold EL/LOCK to lock or unlock keypad.

indicates keypad is locked.

The SE331 is water-resistant up to 50 meters (164 feet)

RAIN 

SPLASHES 

ETC

SHOWERING 

(WARM/ 

COOL

WATER 

ONLY)

LIGHT 

SWIMMING/ 

SHALLOW 

WATER

SHALLOW 

DIVING / 

SURFING/ 

WATER 

SPORTS

SNORKELING/ 

DEEP WATER 

DIVING

50M / 

164 FT

OK

OK

OK

OK

NO

•  Ensure the buttons and battery compartment are secured and intact before exposing the 

watch to excessive water.

•  Avoid pressing the buttons while in the water or during heavy rainstorms, as this may 

cause water to enter the watch, leading to malfunction.

 nOTE   Even if both the watch and the chest belt are water resistant, as radio signals do not 
carry in water, signal transmission between the watch and chest belt will still be impossible 
in water.

CLOCK
Time format

12/24 hour format with hour / minute

Date format

DD.MM.YY or MM.DD.YY

Year range

2010 - 2059

Target heart rate zone

50-60%; 61-70%; 71-80%; 81-90%; 91-
100%

Maximum memory

99 records

Calorie range

0 to 9,999 kcal

pOwEr
Watch

1 x CR2032 3V lithium battery

Chest belt

1 x CR2032 3V lithium battery

Operating temperature

For watch:
32˚F to 104˚F
For chest belt:
41˚F to 104˚F

Storage temperature

For watch and chest belt:
-4˚F to 140˚F

To ensure you use your product correctly and safely, read these warnings and the entire user 
manual before using the product:

•  Use a soft, slightly moistened cloth. Do not use abrasive or corrosive cleaning agents, as 

these may cause damage. Use luke warm water and mild soap to clean the watch and
chest belt thoroughly after each training session. Never use the products in hot water or
store them when wet.

•  Do not bend or stretch the transmitter part of the chest belt.
•  Do  not  subject  the  product  to  excessive  force,  shock,  dust,  temperature  changes,  or 

humidity. Never expose the product to direct sunlight for extended periods. Such treatment 
may result in malfunction.

•  Do not tamper with the internal components. Doing so will terminate the product warranty

and may cause damage. The main unit contains no user-serviceable parts.

•  Do not scratch hard objects against the LCD display as this may cause damage.
•  Take precautions when handling all battery types.

•  Remove the batteries whenever you are planning to store the product for a long period of

time.

•  When replacing batteries, use new batteries as specified in this user manual.
•  The product is a precision instrument. Never attempt to take this device apart. Contact the

retailer or our customer service department if the product requires servicing.

•  Do not touch the exposed electronic circuitry, as there is a danger of electric shock.
•  Check all major functions if the device has not been used for a long time. Maintain regular 

internal testing and cleaning of your device. Have your watch serviced by an approved
service center annually.

•  When disposing of this product, ensure it is collected separately for special treatment and 

not as normal household waste.

•  Due to printing limitations, the displays shown in this manual may differ from the actual 

display.

•  The  contents  of  this  manual  may  not  be  reproduced  without  the  permission  of  the

manufacturer.

 nOTE  The technical specifications for this product and the contents of the user manual are 
subject to change without notice.

 nOTE  Features and accessories will not be available in all countries.  For more information, 
please contact your local retailer.

Visit our website (www.oregonscientific.com) to learn more about Oregon Scientific products. 

If you’re in the US and would like to contact our Customer Care department directly, please 
visit: www2.oregonscientific.com/service/support.asp

For international inquiries, pleasve visit: www2.oregonscientific.com/about/international.asp