What do you mean by realtime? Garmin will give you a live heartrate, just has to be within of a few inches of the strap. And the HR-swim does not slip. the HR-Tri is designed for under a rashguard or westuit. But you are going to look at your watch while swimming?
What do you mean by realtime? Garmin will give you a live heartrate, just has to be within of a few inches of the strap. And the HR-swim does not slip. the HR-Tri is designed for under a rashguard or westuit. But you are going to look at your watch while swimming?
