This combo you can track all the metrics while swimming with the Form Smart Goggles and the Polar Verity Heart Rate monitor which attaches to the side of the goggles.
FORM Smart Swim Goggles Black Smart Display FSG100-SG-BK
$249.99 MSRP
Have been tested and work great
Includes:
FORM Smart Swim Goggles
Charger
Case
4 different size nose bridges
COMBO
Polar Verity Sense Optical Heart Rate Monitor
The box contains: Polar Verity Sense, armband, swimming goggle strap clip, USB charging adapter and storage pouch.