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J. TECHNICAL
SPECIFICATION
J 81
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 heartbeats per minute (bpm).
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
Material: Polyurethane
Waterproof
Elastic Strap
Buckle material: Polyurethane
Fabric material: Nylon, polyester and natural rubber
including a small amount of latex