MODE/- +/ST/SP
EL/Lock
1
2
3
4
B C D
A
5
6
7
MODE/- +/ST/SP
+/ST/SP
+/ST/SP
+/ST/SP
+/ST/SP
+/ST/SP
MODE/- +/ST/SP
START
+/ST/SP
MODE/-
+/ST/SP
START
Zone Trainer
MODEL: SE331
USER MANUAL
EN
CONTROL BUTTONS / LCD DISPLAY
1. : key tone deactivated
2. Time; heart rate measurements; mode banners; exercise time / data
3. : low battery indicator
4. : key press prompt (press MODE/-)
5. : keypad locked
6. :key press prompt (press +/ST/SP)
7. Key press prompt (Tap on lens): enter sub setting mode; conrm
setting
A. EL/LOCK: Activate backlight; lock / unlock keypad
B. MODE/-: toggle between modes; exit current display and return to previous screen; initiate
search for HR signal; decrease value of the setting; toggle setting options
C. Tap on lens: enter setting mode; conrm setting; toggle through displays
D. +/ST/SP: start / stop stopwatch; increase value of the setting; toggle setting options
STARTING YOUR WATCH (FIRST TIME)
Press and hold any key to activate the LCD screen. The watch will prompt you to set your
user prole. (Go directly to ‘Set user prole’ section, step 4).
IMPORTANT
• To ensure accurate calculations with your exercise, you are strongly encouraged to set the
watch and user proles before exercising.
• Remember to set the proles after every battery replacement or reset.
NOTE When the watch is left idle for 30 seconds during set up, it will automatically exit the
setting mode and display the time.
Memory
Set up
SET USER PROFILE
When prompted to set user prole after starting the watch for the rst
time, the screen below will be shown. Go directly to step 4.
For normal setting procedure:
1. Press MODE/- repeatedly to select “SET”, “TIME” will be displayed shortly after.
2. Press +/ST/SP repeatedly to navigate to “USER”.
3. Tap on lens to enter user prole setting options.
4. Set user prole according to the following order: gender, age, weight unit, weight, height
unit, height, tness level, by pressing the following buttons:
• +/ST/SP to increase value or toggle options
• MODE/- to decrease value or toggle options
• Tap on lens to conrm
“DONE” indicates user prole setting has been completed. This is only shown when setting
the watch for the rst time or after battery reset.
FITNESS LEVEL
The tness level is based on your own self-assessment of how t you are (depending on the
amount of exercise you regularly perform).
FITNESS
LEVEL
BEG
INT
ATH
DESCRIPTION
Beginner – You haven’t exercised for a while and do not usually participate in
programmed recreation sports or exercise.
Intermediate – You are engaged in modest physical activity (such as
golng, horseback riding, table tennis, calisthenics, bowling, weight lifting or
gymnastics) 2-3 times a week, totaling 1 hour per week.
Athelete – You actively and regularly participate in heavy physical exercise
(such as running, jogging, swimming, cycling, or skipping rope) or engage in
vigorous aerobic exercise (such as tennis, basketball or handball).
NOTE You must enter the tness level to calculate the calories burned.
TIP The watch generates calculations based on the inputted data to show the calorie / fat
burned and the period exercised at the chosen intensity (target HR zone range) to help you
track your progress over time. As you progress, update weight and tness level to help the
watch give you an up-to-date reection of your physical condition.
SETTING MODE
After setting your user prole, the “USER” screen below will be shown. You can continue with
the other settings by pressing +/ST/SP repeatedly (see step 2 below).
However, if the user prole was set for the rst time or after battery reset, the watch will
automatically return to the default time display. Start with step 1.
1. Press MODE/- repeatedly to select “SET”, “TIME” will be displayed shortly after.
2. Press +/ST/SP to toggle between settings.
Gender
Age
USER
HR ZONE
TOGGLE
* For further details please refer to the “Understanding Heart Rate” section in this manual.
Weight unit
Weight
Height unit
Height
Activity level
On / Off
HR Zone range*
On/Off
(Enable display to auto toggle during exercise )
WEARING THE CHEST BELT
If you only wish to use the stopwatch function (and not record any tness data), skip
to ‘Start exercising’ section.
Chest belt
The chest belt counts your heartbeat and transmits this data to the watch.
1. Wet the conductive pads on the underside of the chest belt with a few drops of water or
conductive gel to ensure solid contact.
2. Holding the elastic strap, thread the plastic tab
through the eyelet of the chest belt unit. Turn it
slightly and snap into place.
3. Place the heart rate chest belt slightly below your
chest and wrap the strap around your chest. Pass
the other tab through the remaining eyelet and
snap into place.
To ensure an accurate heart rate signal, adjust the
strap until the belt sits snugly below your pectoral
muscles.
TIPS
• The position of the chest belt affects its performance.
• In dry, cold climates, it may take several minutes for the chest belt to function steadily.
This is normal and should improve with several minutes of exercise.
NOTE To maintain the best performance of your chest belt, please handle it with care
according to the following:
• Do not wrap the chest belt in a wet towel nor with other wet materials.
• Do not store the chest belt in a hot (about 122°F) and humid (about 90%) environment.
• Do not place or wash the chest belt under running water, instead clean it with a wet
cloth.
• Do not place the conductive rubber face down on a metal table or surface.
• Properly dry the chest belt immediately after use.
TRANSMISSION SIGNAL
The heart rate chest belt and watch have a maximum transmission range of about 25 inches.
They are equipped with the latest digital coding system to reduce signal interference from the
environment, as well as analog technology.
Signal unsuccessful?
The signal search will take approximately
30 seconds. If after 30 seconds the “NO HR
BELT” is displayed, then your signal search
has been unsuccessful. You can either:
1) Press +/ST/SP and proceed to use the watch as a stopwatch (without exercise recording
function); or
2) Press MODE/- to force another signal search.
Analog or Digital?
The digital signal is less susceptible to signal interference and is suitable in crowded areas or
where there are other monitors / equipment. You should only switch to the analog transmission
signal if the situation in point 2 occurs (see ‘Encountering difculties?’ below).
To switch from digital to analog or analog to digital system:
1) Press the chest belt button for more than 6 seconds.
2) Press and hold MODE/- on the watch to force a signal search.
Encountering difculties?
In the event that you experience a weak signal or your signal is disrupted by interference in the
environment, follow the instructions below to identify and resolve the situation.
1. The signal is weak - the watch may only show “0”:
• Shorten the distance between the heart rate chest belt and watch.
• Re-adjust the position of the heart rate chest belt.
• Check the conductive pads are moist enough to ensure solid contact.
• Check the batteries. If they are low or exhausted, the transmission range may be
shortened.
• Press and hold MODE/- to force a signal search.
2. The gym equipment does not seem to work with your chest belt and the digital icon is
displayed:
• Most gym equipment is compatible with the analog system . Press and hold the
chest belt button for more than 6 seconds to change from digital to analog. Then press
and hold MODE/- to force a signal search.
3. Interference from another person’s heart rate monitor - their heart rate readings appear on
your watch, or the readings may uctuate:
• Force another signal search by pressing the chest belt button then press and hold
MODE/- on the watch. Do not press and hold the chest belt button, as it will change
the transmission signal from digital to analog.
4. The signal is jammed - “NO HR BELT” appears on the display after several tries:
• There is too much interference in the environment for your heart rate monitor to
function. Move to an area where the watch can register your heart rate reading.
WARNING Signal interference in the environment can be caused by electromagnetic
disturbances. These may occur near high voltage power lines, trafc lights, overhead lines
of electric railways, electric bus lines or trams, televisions, car motors, bike computers, some
motor driven exercise equipment, cellular phones or when you walk through electric security
gates. Under interference, the heart rate reading may become unstable and inaccurate.
START EXERCISING
If you wish to receive comprehensive calculations (such as your heart rate and the calorie / fat
burned) for an exercise session, before you start, allow the watch a few seconds to search for
chest belt rst. For detailed information or if encountering difculties, refer to “Transmission
signal” section above.
START TAKING MEASUREMENTS
If using only the stopwatch function:
1. Press MODE/- to select “EXE”, “HR BELT” will be displayed shortly after to indicate system
is searching for chest belt signal.
2. Press +/ST/SP twice to skip heart rate signal search and start stopwatch.
NAVIGATING THROUGH THE OPTIONS
KEY PRESS PROMPTS
The watch has been designed with prompts to guide you
through the settings and displays.
TAP ON LENS
The tap on lens feature allows you to toggle through real time tness data while you are
exercising; review stored data of an entire work-out session (memory mode) as well as
navigate through the settings (setting mode).
To use the tap on lens: Simply tap on the lens.
MODES
There are 4 modes. Press MODE/- to toggle through the different modes.
MODE BANNER MAIN DISPLAY
Time (Default
display)
Exercise
3. Tap on lens to enter into individual setting.
4. Start setting the selected option by pressing the following buttons:
• +/ST/SP to increase value or toggle options
• MODE/- to decrease value or toggle options
• Tap on lens to conrm
5. Repeat steps 2-4 for all settings.
Settings Setting options (Press +/ST/SP or MODE/- and Tap to conrm)
TIME
DATE
Hour format
Hour / minute
Display format (day-month or month-day)
Year
Month
Day
Search for heart rate signal:
• Press MODE/- to select “EXE”, “HR BELT” will be displayed shortly after to indicate
system is searching for chest belt signal.
NOTE Whenever the watch is searching for the chest belt signal (manual or automatic
search), make sure that the chest belt is no further than 4 inches from the watch.
Your watch will advise you which system it is using and the signal status by displaying the
following icons:
Icon Description
Searching for a signal
(Press +/ST/SP to skip search and only use
stopwatch function)
A signal has been found and the digital system
is being used
A signal has been found and the analog system
is being used
No signal has been found
(no symbol)
If using chest belt to receive and record tness data:
1. Press MODE/- to select “EXE”, “HR BELT” will be displayed shortly after to indicate system
is searching for chest belt signal. Watch will display system used (analog / digital), then
the stopwatch screen.
2. Press +/ST/SP to start stopwatch.
TIP You can view the time while exercising. Press MODE/- to view time.
PAUSE, RESUME / STOP
If you need to take a break during exercise, press +/ST/SP.
When ready, press +/ST/SP to resume exercise.
To stop exercise and save data: Press +/ST/SP to pause, then press MODE/-.
After a long pause, the watch will time out and automatically save the data.
UNDERSTANDING THE DISPLAYS
Tap
MODE/- +/ST/SP MODE/-
NORMAL CONDITIONS
To view total calories burned since last
reset: tap on lens when screen shows
default time display.
DURING EXERCISE
To toggle between displays during exercise: tap on lens.
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)
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 efcient 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
specic goals.
MEMORY
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
To replace watch battery:
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.
To replace the chest belt battery:
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 proles after every battery replacement or reset.
KEYPAD LOCK
Press and hold EL/LOCK to lock or unlock keypad.
indicates keypad is locked.
WATER RESISTANCE
The SE331 is water-resistant up to 50 meters (164 feet)
• Remove the batteries whenever you are planning to store the product for a long period of
time.
• When replacing batteries, use new batteries as specied 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 specications 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.
ABOUT OREGON SCIENTIFIC
Visit our website (www.oregonscientic.com) to learn more about Oregon Scientic products.
If you’re in the US and would like to contact our Customer Care department directly, please
visit: www2.oregonscientic.com/service/support.asp
For international inquiries, pleasve visit: www2.oregonscientic.com/about/international.asp
ALERTS
This watch enables you to select a target HR
zone according to your tness 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:
ICON BEEP(S) DESCRIPTION
/ ABOVE ZONE!
/ BELOW ZONE!
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.
2 You have gone above your upper HR limit
1 You have gone below your lower HR limit
UNDERSTANDING HEART RATE
HEART RATE ZONES AND EXERCISE
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 specic to you.
HR Zone
Fat
burning
Aerobic 71% - 80%
Anaerobic
*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 benet most from your work-out, determine your tness 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 benets, burn fat and become more t.
Corresponding
watch setting
50% - 60%
61% - 70%
81% - 90%
91% - 100%
Description / benet derived Examples
For beginners and those with health
problems. Gets body used to exercise
and improves health.
Improves heart’s ability to deliver
oxygen. Calories burned mostly from
stored body fat.
Increases endurance and muscle
strength. Breathing is faster and
deeper promoting proper circulation of
oxygenated blood.
Builds muscle and enhances speed,
power and performance levels. Body
requires more oxygen than it can
provide.
For athletes. Vigorous training, usually
done in short bursts to enhance power
and performance. May increase chance
of injury and soreness.
Brisk walking
Jogging, easy
cycling.
Running,
aerobic dance,
jumping rope.
Weight-lifting,
resistance
machine.
Sprinting
Average heart rate
Total calories burned (kcal)
Total fat burned (g)
To return to previous screen at any time: Press MODE/-.
CLEAR RECORDS
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.
To delete memory:
1. Press MODE/- repeatedly to select “MEM”.
2. Press +/ST/SP repeatedly until “DELETE” will be displayed.
3. Press MODE/- to conrm.
DONE indicates the record has been cleared.
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.
OTHER OPERATIONS AND SETTINGS
ACTIVATE BACKLIGHT
Press EL/LOCK. (Press any key to extend backlight for another 3 seconds).
NOTE The backlight function will not operate if “ ” is displayed.
BEEP TONE ON / OFF
When time is displayed, press ST/SP/+ to activate / deactivate beep tone.
indicates beep tone is deactivated.
REPLACE BATTERY
If the battery power of your watch or chest belt is low, the watch will display:
Watch
Chest belt “HR BELT LOW BATT”
RAIN
SPLASHES
50M /
164 FT
• 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.
SHOWERING
ETC
OK OK OK OK NO
(WARM/
COOL
WATER
ONLY)
LIGHT
SWIMMING/
SHALLOW
WATER
SHALLOW
DIVING /
SURFING/
WATER
SPORTS
SNORKELING/
DEEP WATER
DIVING
SPECIFICATIONS
CLOCK
Time format 12/24 hour format with hour / minute
Date format DD.MM.YY or MM.DD.YY
Year range 2010 - 2059
TRAINING
Target heart rate zone
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 ENVIRONMENT
Operating temperature
Storage temperature
50-60%; 61-70%; 71-80%; 81-90%; 91100%
For watch:
32˚F to 104˚F
For chest belt:
41˚F to 104˚F
For watch and chest belt:
-4˚F to 140˚F
PRECAUTIONS
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.
© 2010 Oregon Scientic. All rights reserved.
300102655-00001-10
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