Here is a pair of goggles that help you swim like a pro. The Form Swim Goggles have a see-through smart display that shows metrics without obstructing your vision. The device captures and displays interval time, rest time, stroke rate and count, distance per stroke, pace per 100 or 50 meters, length count and calories burned.
These swim goggles are smart enough to detect turns, rest, and sets. You can connect it to your phone via Bluetooth.