Garmin HRM-Fit

Purpose-built for women, the clip-on design easily attaches to medium- and high-support sports bras (longline, front-zip or light-support sports bras not recommended)
Premium heart rate monitor transmits accurate real-time heart rate and heart rate variability data to your compatible Garmin devices, compatible fitness equipment, the Tacx Training app and other smartphone apps
Comfortable to wear and provides accurate heart rate data for various activities, including running, indoor and outdoor cycling, strength training, HIIT, fitness classes and more
Captures running dynamics, such as vertical oscillation, ground contact time, stride length, vertical ratio and more to help improve your form (requires a compatible Garmin device)
Computes pace and distance for treadmill or indoor track workouts
Stores heart rate data during activities out of range of your smartwatch (must stop and start an activity on your compatible Garmin watch)
Includes activity tracking to store steps, calories, intensity minutes and all-day heart rate then updates all your compatible Garmin devices
Battery life: up to 1 year