Garmin HRM-DUAL Quick Start Manual page 11

NOTE: Do not overtighten.
EN After you replace the heart rate monitor
battery, you may need to pair it with the device
again.
Heart Rate Monitor Specifications
Battery type
Battery life
Water resistance
Operating
temperature range
Wireless
frequency/protocol
*The device withstands pressure equivalent to
a depth of 10 m. For more information, go to
Garmin.com.sg/legal/waterrating.
10
User-replaceable
CR2032, 3 V.
Up to 3.5 yr. at 1 hr./day
1 ATM*
NOTE: This product
does not transmit
heart rate data while
swimming.
From -5° to 50°C (from
23° to 122°F)
Ant+ and Bluetooth
HRM-DUAL