The HRM-Swim is engineered specifically for swimmers, featuring a sleek, non-slip strap that stays securely in place during intense pool sessions, including wall push-offs. It stores heart rate data underwater and forwards it to compatible devices like the Forerunner® 920XT. This allows you to monitor real-time heart rate, interval summaries, and stored data even when your torso is lifted out of the water, helping you optimize your training with precise performance insights.