1.3in1 function for nose trimmer,hair trimmer,micro trimmer 2.Stainless steel blade 3.Operated:1xAA batter Description:1. ... and ear hair. 2.battery:1AAbattery3.3in1 function for nose trimmer,hair trimmer,& micro trimmer4.Slim body offer you a good feeling ... don't use it when your hand is wet. Nose trimmer