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pressure washer. When measuring heart rate in
water, you may experience interference for
various reasons. For more information, consult
the full user manual at www.polar.com/support.
If you are having problems measuring heart rate
in salt water or highly chlorinated water, we
recommend you use the Polar T31c heart rate
sensor.
Technical Specifications
Training computer
Battery life:
Average 8-11 months (if you train
on average 1h/day, 7 days/week)
Battery type: CR 2032
Battery sealing ring: EPDM O-ring 24.30 x 0.8 mm (no
need to change during battery
replacement if sealing ring is not
damaged)
Operating temperature: -10 °C to +50 °C / 14 °F to 122 °F
Training computer
materials:
PMMA lens with hard coating in
top surface, training computer
body ABS+GF metal parts
stainless steel
Wrist strap and buckle
materials:
Polyurethane (TPU) and stainless
steel
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 bpm
Current speed display
range:
0-127 km/h or 0-75 mph
Water resistance: 30 m (suitable for bathing and
swimming)
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