glassninja
Meet the KUAI: a pair of smart headphones that serve as your heart rate monitor, sport watch, and music headset. They are designed to track calories burned, cadence, speed, distance, and VO2 Max. You are provided with coaching to take your performance to the next level.
More items like this: here
KUAI headphones let you create custom workouts and download training plans. They feature Bluetooth and ANT+ connectivity. Whether you are interested in swimming, cycling, or running, KUAI has you covered. These headphones can work autonomously or with your phone. Yet another interesting Kickstarter project.
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