From hilly hikes to full-on training sessions, the Garmin HRM 600 is built to keep up. It delivers accurate heart rate and HRV data straight to your compatible Garmin device, helping you track your effort and improve over time.Want to understand your performance better? When paired with a compatible Garmin smartwatch, you'll get extra running metrics like step speed loss, perfect for fine-tuning your form.Designed for comfort on the move, it's fully adjustable, comes in two sizes, and fits snugly whatever activity you're tackling. Even if you're not wearing your watch, it'll still track your stats and then sync everything to the Garmin Connect app when you're done.And when the hard work's over, just pop out the module and throw the strap in the wash. With up to two months of battery life from a single charge, it's a no-fuss bit of kit that's ready whenever you are._Sends accurate real-time heart rate and HRV data to compatible Garmin smartwatches and cycling computers, fitness equipment, and appsComfortable machine-washable strap is available in two sizes (XS-S and M-XL) for the most ideal fit for your body typeUnderstand how much you slow down when your foot hits the ground with step speed loss, and improve your running form with additional running dynamics, including stride length, vertical oscillation and ground contact time balance (requires compatible smartwatch)During activities where you can't wear a watch, such as team sports, HRM 600 will record the workout and sync data, including heart rate, calories, speed, distance and more, directly to the Garmin Connect smartphone appTracks daily metrics, including estimated steps, heart rate, calories burned and more, and syncs that data directly to the Garmin Connect smartphone appFor indoor track and treadmill runs, HRM 600 sends pace and distance to your compatible smartwatchProvides and stores accurate heart rate data during swim activities and syncs it to your compatible smartwatch after you save your workoutUp to 2 months of battery life with a rechargeable batterySize: M-XL