POLAR M21 - Manual (Page 54)

55
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: Built-in Lithium Cell
Battery life: Average 2500 hours of use
Operating temperature: 14
°
F to 122
°
F / -10
°
C to +50
°
C
Waterproof
ELASTIC STRAP
Buckle material: Polyurethane
Fabric material: Nylon, polyester and natural
rubber including a small amount
of latex
WRIST RECEIVER
Battery type: CR 2032
Battery life: Average 1 year
(2h / day, 7 days / week)
Operating temperature: 14
°
F to 122
°
F / -10
°
C to +50
°
C
Water resistance: to 100 feet / 30 meters
Accuracy of formula for
age based OwnZone
heart rate limits (OZ.A):
±
1bpm
Accuracy of heart rate
measurement:
±
1% or
±
1 bpm, whichever
larger, definition applies to
steady state conditions
TECHNICAL SPECIFICATIONS
M52 man USA GBR A 2001 10/12/01, 12:47 55