SUPER FAST ELECTRIC 3-HOLE PUNCH: This 3-hole electric paper punch allows you to finish paper punching within seconds, which is a real time-saver. Automatic 3 hole steel punch with efficient paper guide ensures precise punching every time. 20 SHEET PUNCH CAPACITY: This electric hole punch can neatly punch 20 sheets paper at a time using the adjustable paper guide, creating precise 0.28 inches holes with the push of a button. ELECTRIC PAPER PUNCH: Simple push button start makes hole punching effortless. Efficient electric punch allows you to preserve your strength while still presenting professional results. AC OR BATTERY OPERATED: This electric paper punch can be powered by an AC adapter or 6 AA batteries(not included), providing both reliable punching power and lightweight mobility in one convenient package.