Armed to give helpful data and feedback on our training, recovery, progress, nutrition, and much more, the Vantage V2 HR + H10 HR is the ultimate companion to help us take charge of our active lifestyle. This fully waterproof watch also includes Polar's H10 heart rate chest strap, which we use with the watch, our phone, or other fitness apps. This powerful duo provides beat-by-beat, accurate heart rate data to help keep us at the top of our game.