Rotary trimmer features an LED SureCut, cut-line indicator that lets you to see your cut before you make it. Built-in LED lights are designed to ensure accurate cutting. 12" Titanium Carbide-coated blade is three times harder than steel and cuts up to 12 sheets at a time. Safety blade system contains blades in a cartridge that covers sharp edges during blade changing and storage. Blade storage is conveniently located on bottom and is able to hold three extra blades and a cutting bar. Anti-wear veneer is printed from bottom so it will never wear. Precision-printed scale and grid let you accurately align projects before cutting. Trimmer includes three AA batteries.