Get reliable, handheld stapling with the Optima 20 Stapler.Jam Free guaranteed for fast, high-volume stapling when used with Swingline S.F. 4 Premium or Optima Premium Staples. Staples up to 20 sheets at once. Operates quietly without compromising power orspeed. Easily switch between stapling modes with the user control switch. Features automatic & manual stapling modes for flexible operation. QuickLoad technology for easy staple reloading. Eject empty staple magazines with the press of a button. Built-in Intelligent Paper Alignment Guide & Stack Height Gauge assist in accurate staple placement & sheet count measuring. Operate using battery power or with the included AC adapter. Four AA batteries required (not included). Not compatible with rechargeable batteries. 100% performance guarantee. Optima 20Detachable staple remover, low-staple indicator light & adjustable depth guide (six AA batteries – sold separately). High Capacity Stapling: No; Flat Clinch Plate: No; Tacking: No; Type of Staple Used: Standard.