From the outside, you wouldn't guess what a small pedometer like this can do. With a completely simple operation, the Omron Walking Style 4 offers several ways to track your walking and running activities. First, the Walking Style IV measures your steps with a highly precise 3D sensor. Additionally, it automatically detects fast (aerobic) steps and displays them separately. Aerobic steps are defined as more than 60 steps per minute over a period of 10 minutes.