See your effort levels in real time and more metrics when your swim is done

If you like the idea of bringing heart rate training into the water but don’t fancy wearing a chest strap to do it, Instabeat is here to make it happen from your own swimming goggles.

The wearable device is slipped around one side of your existing goggles and can take heart rate measurements from the temple via an optical HR sensor. From a small light that appears on the lower right bottom of your goggle lens, you can see your current heart rate zone.
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Read full post here:
https://www.wareable.com/swimming/instabeat-swimming-wearable-release-date-price-specs-7418