Electronic time clock features a dual-mode design that lets you quickly choose whether you want it to operate in Calculating or Non-Calculating mode. In Calculating mode, it calculates the hours your employee has worked and adds them to a running total for that time period on the employee's time card. In Non-Calculating mode, it simply records the times in and out across all six columns of the time card. Easy, one-handed operation means your employees can do everything with just one hand to make the process quick and simple. SmartClock technology with perpetual calendar retains your time, date and settings during power outages, and auto-adjusts for Daylight Saving Time and Leap Years. TotalTime Calculating mode option automatically calculates the elapsed hours between punches and total accumulated hours for each pay period in exact minute or rounded time formats. Time clock supports weekly, bi-weekly, semi-monthly and monthly pay periods for up to 100 employees.