Energy Saving: Nose trimmer machine for men needs 1pc AA battery (not included). and this one battery can last about three months. the use of silent noise reduction system, no noise, comfortable and quiet to clean facial hair. Rotating Blade System: Nose hair trimmer features a double-edged rotating blade system with protective cover, 360°rotating interior design, which precisely flawless nose trimmer without painful and unpleasant pulling. More Comfortably And Effectively: nose hair trimmer can comfortably and effectively remove your noses hair, ears hair, eyebrows hair. And she can meets your different needs in one device application. Durable and Painless: This nose and ear hairs trimmer is made of high quality precision materials that ensure long life and precise cutting, this nose electric trimmer for men cuts safely without any pain, this nose electric trimmer saves you the risk of pulling your hair or damaging your skin.