Fitness, Health and Wellbeing are top priority these days, and working out just got easier with the Kuai Smart Sport Headphones. Without using any other device, Kuai Smart Headphones provides instant voice feedback about your speed, distance, calories, heart rate and more whether you’re cycling, swimming, running or weight lifting at the gym. Connectivity through Bluetooth with a memory of 8Gb, you can sync various training plans, integrate your music player, answer calls via bluetooth and it’s even waterproof to 3m depth (If you want to take that call in the shallow end of a swimming pool!). With a comfortable and rugged design, the Kuai Headphones are the future of smart and effective training all rolled into one smart nifty device!