Garmin HRM-Pro™ Plus Chest Strap Dual Heart Rate Band - Black

Premium heart rate strap transmits accurate real-time heart rate and heart rate variability data via ANT+® technology and BLUETOOTH® Low Energy
Captures running dynamics, such as vertical oscillation, ground contact time, stride length, vertical ratio and more to help improve your form
Computes pace and distance for treadmill or indoor track workouts
Stores heart rate data during swimming or other activities out of range of your watch and automatically sends the data to your compatible Garmin watch
Includes activity tracking to store steps, calories, intensity minutes and all-day heart rate then updates all Garmin devices via the app
Small, lightweight heart rate monitoring module is no wider than the width of the soft, comfortable strap
Tool-free quarter-turn battery door is easy to use and improves durability
Battery life: up to 1 year
Supports heart rate variability and advanced heart rate features: Yes
ANT+ running dynamics: Yes

1 x HRM-Pro Plus
Documentation

Sizing range: 23.5”-42.0” (60.0-106.0 cm); 23.5”-56.0” (60.0-142.0 cm) with optional strap extender
Battery: CR2032
Battery life: 12 months (Tri training 1 hour per day)
Water rating: 5 ATM
Operating temperature: 32°F to 104°F (0°C to 40°C)

Number of concurrent BLE connections supported: 3
Number of concurrent ANT connections supported: No limit
Range: 3 meters