...HEART RATE READING BECOMES ERRATIC OR EXTREMELY HIGH (OVER 200 BPM)?
You may have come within range of strong electromagnetic signals which cause erratic readings on the Receiver display. Check your surroundings and move further away from the source of disturbance. 
Precautions.
...THERE ARE NO REACTIONS TO ANY BUTTONS? Reset the Polar Heart Rate Monitor. Resetting clears all memory values and settings will return to the default settings.
1.Wear the Polar Transmitter as described earlier in this manual.
2.Simultaneously press both buttons and hold the Polar logo of the Wrist Receiver to the Polar logo of the Polar Transmitter.
Display becomes full of digits.
3.Press either the right or the left button once.
You hear a long beep.
Polar Fitwatch enters the Time mode.
...THE DISPLAY IS BLANK OR FADING?
Usually the first sign of a discharged battery is disappearing of the digits when using the backlight. Have the batteries checked. 
Service.
...THE BATTERY OF THE WRIST RECEIVER MUST BE REPLACED?
We recommend having all service done by authorised Polar Service. Especially during the warranty period this is necessary to keep the warranty of the whole Polar Heart Rate Monitor valid. Polar Service will test your Wrist Receiver for water resistance after battery replacement and make a full periodic check of the complete Polar Heart Rate Monitor.
Care and Maintenance/Batteries and Service.
Technical
Specifications
Polar Heart Rate Monitor is designed to indicate the level of physiological strain and intensity in sports and exercise. No other use is intended or implied. Heart rate is displayed as number of heart beats per minute (bpm).
POLAR TRANSMITTER
Battery type: | |
Battery life: | Average 2500 hours of use |
Operating temperature: | |
POLAR WRIST RECEIVER | |
|
|
Battery type: | CR 2032 |
Battery life: | Average 1 year (2h/day, 7 days/week) |
Operating temperature: | |
Water resistancy: | to 20 metres |
Accuracy of heart |
|
rate measurement: | ± 1% or ± 1 beats per minute, |
| whichever larger, definition applies |
| to steady state conditions |
DEFAULT SETTINGS | |
|
|
Upper Limit: | 100 |
Lower Limit: | 60 |
Time of day: | 10.00 AM |
30 | 31 |
FITWATCH.manual GBR/E |
5.1.2001, 10:55