HRM-DUAL

Module: 2.4" W x 1.3" H x 0.4" D (62 mm x 34 mm x 11 mm)

Strap Length: Adjustable from 25" to 52" (63.5 cm to 132 cm)

Weight: 1.9 oz (54.4 g)

Water Resistance: 1 ATM

Battery: User-replaceable size CR2032 (3 volts)

Battery Life: Up to 3.5 years (based on average use of 1 hour per day)

Operating Temperature: 23°F–122°F (-5°C–50°C)

Radio Frequency/Protocol: 2.4 GHz ANT wireless communications protocol; BLUETOOTH® Wireless Technology 5.0

Range: 3 m

System Compatibility: ANT+, BLUETOOTH