For more accurate step counting, wear your watch as close to your hand as possible & allow 2-3 days to let your watch get acclimated to your movements.
Pedometers found in most watches will not track every step instantly, but will record the step and will show it after a few moments.
There are many factors that go into how accurate a pedometer is; from stride length to how much you swing your arms when you're telling a great story. And since every person is unique, there will always be some variation in measurement.
Monitoring steps will help you reach broader fitness goals but it’s important to remember that the most important thing is to develop new habits of increased activity; whether your goal is 5,000, 10,000, or 15,000 steps a day.