1.With a 18650 lithium battery.
2.Three stops to adjust the sharpness of the nib
3.Charge using
4.Fully automatic
5.Battery low, red light flashing
6.Malfunction, red light always on
7.In use, blue light blinks
8.Replaceable tool holder
9.Two forms of top cover can be selected
10.Sharpener diameter of 6-12 mm