User Guide
53
ENGLISH
9. TECHNICAL SPECIFICATIONS
The FS1/FS2c/FS3c heart rate monitor is designed 
•  to help the users to achieve their personal fi tness goals.
•  to indicate the level of physiological strain and intensity during an exercise session.
No other use is intended or implied. Heart rate is displayed as the number of heartbeats per minute (bpm).
Water resistance of Polar products is tested according to International Standard ISO 2281. Products are divided into three different categories 
according to their water resistance. Check the back of your Polar product for the water resistance category and compare it to the chart below. 
Please note that these defi nitions do not necessarily apply to products of other manufacturers.
Wrist Unit
Battery type:  CR 2025
Battery life:  average 2 years (1h/day, 7 days/week)
Operating temperature: 14 °F to 122 °F/-10 °C to +50 °C
Wrist strap material:  Thermoplastic Polyurethane (TPU)
Back cover material:  Stainless steel complying with the nickel 
    release regulations of the EU 
  (EU Directive 94/27/EU and its 
    amendment 1999/C 205/05). 
Watch accuracy:  better than ± 2.0 seconds/day
Accuracy of heart rate 
measurement:  ± 1% or ± 1 bpm, whichever larger, 
    defi nition applies to steady state conditions
Heart rate measuring 
range:  15 - 240 bpm
Watch:  12 h or 24 h
Exercise duration:  0 - 23:59
Heart rate limits:  30 - 199 bpm
Exercise time display  < 1 h: mm:ss
Exercise time display  > 1 h: hh:mm
Marking on the 
case back
Water resistant
Water resistant 50m
Water resistant 100m
Wash splashes, sweat, 
raindrops etc.
 X
 X
 X
Bathing and 
swimming
  X
 X
Skin diving with 
snorkel (no air tanks)
 X
SCUBA diving 
(with air tanks)
Water resistant 
characteristics
Splashes, 
raindrops etc.
Minimum for bathing 
and swimming
For frequent use in water 
but no SCUBA diving










