Light and Sleek [SEP] I've tried several E-Files, I pretty much enjoyed them all.  This Jane Choi nail drill is much smaller than my other portable nail drills.  I tested it side by side thinking the Jane Choi would be not as effective as the others because of how light it is.  To my surprised this nail filer is just as good as the other ones.  it's smooth and has little to no vibrations.  This a favorite among the nail tech at my  salon, it's sleek, light and smaller than other portable E-file with external battery in the market.