Since it is a ratchet mechanism, you can twist the left and right alternately so you can easily shave it without having to hold it every time.
The same motion as a ratchet driver.
With a shaving notification function, the switch will pop out and notify you of the sharpening. (SK-825)

Product Name: Sonic SK-825-D Pencil Sharpener, Ratcheter, With Notification Function, Black