BL-100 Electric Letter Opener

A BL-100 electric letter opener. It is black and shaped like a book. You simply push the letter in from the bottom and when it nears the top 2 blades start operating and open the letter. It takes 2 AA batteries; I have included the 2 that came with it but, while they are working well now, I don't know how new they are. The opener is 3 1/8" tall, 2 3/8" wide and 1 5/8" in depth.