A Garmin HRM dual heart rate monitor measures your heart rate during training, so you can understand your body better, train more effectively and achieve greater results.
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Module: 62 mm x 34 mm x 11 mm
Strap Length: 63.5 cm to 132 cm
Weight: 54.4 g
Water Resistance: 1 ATM*
Battery: User-replaceable size CR2032 (3 volts)
Battery Life: Approximately 3.5 years (based on average use of 1 hour per day)
Operating Temperature: -5°C – 50°C
Radio Frequency/Protocol: 2.4 GHz ANT wireless communications protocol; BLUETOOTH®