The Freestyle PacerPro is the perfect walking companion! It gives you your distance walked accurately, since you can measure your own stride length. Find out if your favorite stroll is really as far as you think it is! This model displays up to 99.9999 miles and has an automatic start/stop timer records time only while in motion.The MPH mode calculates average speed, to 20.45 mph, while the STEPS mode calculates average steps per minute, to 225 spm. Counts number of steps up to 99,9999, CALORIES mode calculates KCals burned from a combination of stride length, body weight, and average speed, to 9,9999 KCals. One Year Limited Warranty.