Fast and easy-to-use ATR120 Electronic Time Clock features automatic card positioning and weekly or biweekly pay periods. Can be set to print "late in" and "early out" punches in red for easier card editing. Simply insert the card in the top slot, and the time clock will position the card, print the date and time, and eject the card. Time clock print matches digital display. Print format is Date, Hours (1-12 or 0-23) and Minutes/Hundredths. Built-in, programmable buzzer signifies "start" and "stop" times. Two-color printing shows early and late punches. A built-in battery backup and automatic Daylight Saving Time adjustments help ensure the clock maintains the correct time. Add the available NiCD battery pack, and your employees will be able to punch in and out (up to 200 punches) even when the power is out. This clock is designed to be used for time and attendance recording in a professional office environment. AA battery operates the analogy clock.