Cardio 30, the smallest GPS sports watch on the market, is for all levels of athletes. By setting goals in our pro-training programs, Cardio 30 can accurately calculate & record your location, speed, distance, pace, stride rate, cadence, heart rate & more. Whether it is for cycling or running, your training results then can be shared & analysed online. Also with built-in sensor in Cardio 30, no extra foot pod needed for indoor exercise. When running the Cardio 30 can calculate your stride length accurately with GPS & built in sensor. There is dual time display for different time zones, a backlight & no extra foot pod is needed for indoor exercise.