Simple to use electronic pedometer displays distance traveled and steps taken during your walk, run or hike. In addition, it also features a Solid RED or Flashing RED "warning" light. This large display pedometer features APD (Advanced Pendulum Design with a unique, patented, state-of-the-art pedometer counting engine that ensures accurate step and/or distance measurement). Designed specifically for walkers, runners and hikers. Includes an automatic stride adjustment feature.