Compact, portable electric stapler features a high-speed, reliable motor-driven mechanism for consistent stapling. Versatile dual power operation allows you to choose from the included AC adapter or six AA alkaline batteries (sold separately) for go-anywhere flexibility. Electric stapler staples 2 to 20 sheets of 20 lb. paper with S.F. 4 Premium Staples. Precision adjustment guide offers exceptional control. Push-button operation allows easy staple-loading. Throat depth adjusts from 1/4" to 1-1/2".