In order to effectively filter out invalid steps caused by irregular movements of the hand, all steps counted for single continuous movements less than 10 seconds will be disregarded (if exceeds 10 seconds, the previous step counts will automatically be accumulated). Calculation of Steps, calories, and mileage(Kilometers and miles can be switched) *Time,date,and week(12/24 hour format switchable) *Alarm and hourly time *Countdown and stopwatch *5 seconds EL bright backlight *30M waterproof. Adjustable lightweight breathable steel woven band with stainless steel folding buckle. This pedometer watch uses a large-capacity Japanese-made CR2032 battery, which can last up to 15 months without charging. It also does not require any APP connection and is ready to use any time you want. Wrist size is between : 4.33-7.67inch(110-195mm) The Item is new, but the box is opened.