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lDoyou use a pacemaker or otherimplanted electronicdevice?
lDoyou smoke?
lAreyou pregnant?
Notethat in addition to training intensity, medications for heartconditions, blood pressure,psyc hologicalcon-
ditions,asthma, breathing,etc. ,as well as some energydrinks, alcohol, andnicotine may alsoaff ect heart
rate.
It is importantt o bes ensitive to your body’s responsesduringt raining.If you feel unexpectedpain or
excessivefatigue whentraining, it is recommendedthat you stop thetraining or continue at a lighter
intensity.
Note!If you are using a pacemaker,defibrillator or otherimplanted electronicdevice, y ouc anuse Polar
products.In theory interferenceto pacemaker caused by Polarproducts should not be possible.I n practice no
reportsexist to suggest anyone ever havingexperiencedinterference. We cannot howeveriss uean offic ial
guaranteeonour products’s uitability with all pacemakers orother implanted devices, such as defibrillators,
dueto the variety of devices available. If you have any doubts, or if you experienceany unusual sensations
whileusing Polar products, pleaseconsult y ourphysician or contact the implanted electronicdevice man-
ufacturerto determinesafety inyour case.
If you areallergic to any substance that comes into contact with y oursk in orif yoususpect an allergic reaction
dueto using the product, check the listed materials in TechnicalSpecifications. Toavoid any skin reaction to
theheart rate sensor,w earit overa shirt, but moisten the shirt well undert heelectrodes to ensure flawless
operation.
Thecombinedimpact ofmoisture andintense abrasion may cause a black color to come off the heartrate
sensor’ssurface, possibly staining light-coloredclothes. I f you use perfumeor insect repellent ony ourskin,
youmust ensure that it does not come into contact with the training device or the heartrate sensor.
TECHNICAL SPECIFICATION

A300

Batteryty pe: 68mAh Li-pol rechargeablebattery
Operatingtime: Upto 26 days w ith 24/7act ivity tracking
and1h/day training
Operatingtemperature: -10°C to +50 °C / 14°F to 122 °F
Trainingcomputermaterials: Device: acrylonitrilebutadienes tyrene,
glassfiber, polycarbonate,stainless