1.Battery nail file 2.compact to carry easily 3.Cordless structure 4.1200mAh high capacity battery 5.Protection system JSDANingbo JSDA Electronic Industry Co.,Ltd commits to produce series of high precision micro electric grinder machines. Our products are broadly used in Nail art , Jewelry engraving , Dental grinding , Mould polishing , Wood carving , Craftwork fabrication and so on.1.With a ...