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seriously damage the unit. Only an authorized Suunto service center should do service activities.
NOTE: Thoroughly rinse the device with fresh water, mild soap, and carefully clean the housing
with a moist soft cloth or chamois, especially after salt-water and pool dives. Pay special attention
to the pressure sensor area, water contacts, buttons, and charger pins. Carefully clean the device
end of the charging cable, but do not immerse it in water.
NOTE: Do not leave your Suunto device immersed in water (for rinsing). Maintenance cycle is 500
hours of diving or two years, whichever comes first. Please bring your device to an official Suunto
service center.
INTENDED USE
Suunto Race is a sports watch that tracks your movement and other metrics, such as heart rate
and calories. You can use your device as an optional diving equipment while immersed in water
to a maximum depth of 10 meters. This device is not a dive computer or a standalone product
for measuring any certified scuba diving activity. Suunto Race is only for recreational use and not
meant for medical purposes of any kind.
OPTICAL HEART RATE
Optical heart rate measurement from the wrist is an easy and convenient way to track your heart
rate. Best results for heart rate measurement may be affected by the following factors:
• The watch must be worn directly against your skin. No clothing, however thin, can be between
the sensor and your skin.
• The watch may need to be higher on your arm than where watches are normally worn. The
sensor reads blood flow through tissue. The more tissue it can read, the better.
• Arm movements and flexing muscles, such as gripping a tennis racket, can change the accuracy
of the sensor readings.
• When your heart rate is low, the sensor may not be able to provide stable readings. A short
warm up of a few minutes before you start the recording helps.
• Skin pigmentation and tattoos block light and prevent reliable readings from the optical sensor.
• The optical sensor may not provide accurate heart rate readings for swimming and freediving
activities.
• For higher accuracy and quicker responses to changes in your heart rate, we recommend using
a compatible chest heart rate sensor such as Suunto Smart Sensor.
WARNING: The optical heart rate feature may not be accurate for every user during every
activity. Optical heart rate may also be affected by an individual's unique anatomy and skin
pigmentation. Your actual heart rate may be higher or lower than the optical sensor reading.
WARNING: Only for recreational use; the optical heart rate feature is not for medical use.
SAFETY
WARNING: Always consult a doctor before beginning a training program. Overexertion may
cause serious injury.
WARNING: Allergic reaction or skin irritations may occur when products are in contact with skin,
even though our products comply with industry standards. In such event, stop use immediately
and consult a doctor.
WARNING: For safety reasons, you should never dive alone. Dive with a designated buddy.
WARNING: Freediving involves risks that are not obvious. There is always a risk of
decompression sickness for all diving activity types and dive profiles. Suunto strongly recommends
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