If you are training to be a swimmer, there are some essential gadgets that you need in your kitty. There is a wide range of sensors and trackers that help analyse movement underwater. These smart gadgets come in waterproof designs and can count laps, recognize swimming style, measure health parameters, capture calories burned and so on. These wearables are available as wrist bands, chest straps and more. They collect and transfer data to a compatible smartphone or app for further analysis.

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