Product details:

Premium carbon steel blades and sharpener size: 4.4 x 2.8 x 3.1 (in)
Two separate holes for different pencil size and detachable collect scrap box
A pair of replacement blades and a mini screwdriver included.
Automatic operation of the sharpener simply by inserting the tip in to the hole. EVERY item will be tested before shipping to you.
Powered by 4 pieces of size AA batteries for mobile use; Power adapter is also included for stationary use