Cordless and Battery Powered: Nose hair trimmer is operated with a single AAA battery (not included). Please contact us if you have any problems with your product. Sleek Look: Sleek pen-shaped nose hair trimmer suitable for men and women. With a magnetic protective cap, so it won't fall easily. Portable and Quiet: Easy to use, small enough to put it in your pocket. Quiet enough to provide a comfortable use. Easy to Use: The nose hair trimmer is equipped with a cleaning brush to easily remove hair residue. Washable trimming head, clean it with running water. Painless and Precision: Hypoallergenic dual-edge blades rotation system provides high performance hair trimming from nose and ear.