Size: 14.5 x 3.0 x 2.1 cm, it's small enough to put in your back pocket, backpack or handbag etc..
Gets dull bladed sharp quick, after a few swipes on each side of each blade it was smooth as silk.
This little tool definitely helps extend the life of a sharpening.
Please use the stone in the same direction on each sharpening stroke, then finish it off with the other side by dragging the ceramic over the top of the blade in the same direction.