... cares for possible parts.2, Operated with 2 AA batteries.(not included)3, Reduces rough and callous skin ... palm. 2.Specifications:1. Power supply: 3V, 2pcs AA batteries (not included)2. Unit size: 130*45*68mm ... and draw out the battery cover.2.Insert 2pcs AA batteries inside the unit, match the +/- symbols on ... time, it is recommended to use Alkaline batteries)Notes: Please make sure your hands are ...