Meet the KUAI: a pair of smart headphones that serves as a heart rate monitor, sport watch, and music headset. Kuai headphones can be used during swimming, cycling, and running. They have an integrated heart rate monitor and an accelerometer to monitor your performance. Kuai are waterproof up to 3 meters and come with 8 GB of storage space.
KUAI headphones provide you with virtual coaching to keep you on the right track. The product can work autonomously or with your smartphone. It offers Bluetooth and ANT+ connectivity. Users can download training plans, set up custom workouts, and more. Yet another interesting Kickstarter project.