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KuaiFit gives instant voice feedback of your Heart rate, speed, distance, cadence, calories and power*, all effortlessly given to you while listening to your favorite music and Practicing any Sport, including cycling, running, gym, etc. Unlike most other headphones that need to be connected to a phone, KuaiFit goes where you go and is perfect for many sports. KuaiFit removes the guess work and complications to help you keep fit, lose weight, improve your performance, or train for your next race. Your KuaiFit comes pre-loaded with three plans in the memory; Running Training Plan (4-week duration), Cycling Training Plan (4-week duration), and a Tutorial Training Plan. Many more plans are available to download online.