【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.