Ideal for home, office, or briefcase, the NEW papermonster LO10 will open just about any type or size of envelope in only a few seconds. Light, quiet & small enough to conveniently store away. Simple & easy to use, the openers blades are fully enclosed to protect fingers, & the opener automatically activates when an envelope is inserted. This opener measures 1-3/4 x 2-1/2 x 5-1/2 inches & uses four AA batteries (not included). The L010 Letter opener comes with a 24 month warranty. Free 2nd Class Delivery.