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• Do you use a pacemaker or other implanted electronic device?
• Do you smoke?
• Are you pregnant?
Note that in addition to exercise intensity, medications for heart conditions, blood pressure, psychological
conditions, asthma, breathing, etc., as well as some energy drinks, alcohol, and nicotine may also affect
heart rate.
It is important to be sensitive to your body’s responses during exercise. If you feel unexpected pain or
excessive fatigue when exercising, it is recommended that you stop the exercise or continue at a lighter
intensity.
Note! If you are using a pacemaker, you can use Polar training computers. In theory interference to
pacemaker caused by Polar products should not be possible. In practice no reports exist to suggest anyone
ever having experienced interference. We cannot however issue an official guarantee on our products'
suitability with all pacemakers or other implanted devices due to the variety of devices available. If you
have any doubts, or if you experience any unusual sensations while using Polar products, please consult
your physician or contact the implanted electronic device manufacturer to determine safety in your case.
If you are allergic to any substance that comes into contact with your skin or if you suspect an allergic
reaction due to using the product, check the listed materials in Technical Specifications. To avoid any
skin reaction to the heart rate sensor, wear it over a shirt, but moisten the shirt well under the electrodes
to ensure flawless operation.
Your safety is important to us. The shape of the s3/s3+ stride sensor* is designed to minimize the
possibility of it getting caught in something. In any case, be careful when running with the stride sensor in
brushwood, for example.
The combined impact of moisture and intense abrasion may cause a black color to come off the heart rate sensor’s
surface, possibly staining light-colored clothes. If you use insect repellent on your skin, you must ensure that it
does not come into contact with the heart rate sensor.
WARNING: This product and its packaging contain chemicals known to the State of California to cause
cancer, birth defects or reproductive harm. This notice is provided in accordance with California’s
Proposition 65. More information: http://www.polar.com/regulatory_information.
*Optional s3/s3+ stride sensor W.I.N.D. required.
Technical Specifications
Training computer
Battery life: Average 1 year (1h/day, 7 days/week)
Battery type: CR2032
Battery sealing ring: O-Ring 20.0 x 1.1, material silicone
Operating temperature: -10 °C to +50 °C / 14 °F to 122 °F
Wrist band and buckle material: Polyurethane, stainless steel
Back cover: Polyamide, stainless steel complying with the EU Directive 94/27/EU and its amendment
1999/C 205/05 on the release of nickel from products intended to come into direct and
prolonged contact with the skin.
Watch accuracy: Better than ± 0.5 seconds / day at 25 °C / 77 °F temperature.
Accuracy of heart rate monitor: ± 1% or 1 bpm, whichever larger. Definition applies to stable conditions.
Heart rate measuring range: 15-240
Current speed display range: Stride sensor: 0-36 km/h or 0-22,3 mph, cadence 0-255 rpm
G3/G5 GPS sensor: 0-250 km/h or 0-155,3 mph
Speed sensor: 0-127 km/h or 0-78,9 mph
Cadence sensor: 15-200 rpm
Altitude display range: -550 m … +9000 m / -1800 ft … +29500 ft
The Polar wrist unit calculates altitude by using the standard average altitude at defined air
pressures according to ISO 2533.
Ascent/Descent resolution: 5 m / 20 ft
Training computer limit values
Maximum files:
99
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Customer Service Information 63