The desire to exercise more efficiently drove the Kuaiwear team to create Kuai, the world’s first multisport biometric headphones, using clinically validated technology to provide the most accurate biometric data. Kuai is waterproof up to three meters and combines a heart rate monitor, foot pod, sport watch, MP3 player and virtual coach into one device. It calculates heart rate, VO2 max, calories, cadence, distance, pace and speed in land and water and features voice feedback, voice alerts, training plans, custom ear tips for different sports and the ability for users to answer phone calls.