A:AnswerIt has a built-in rechargeable lithium battery but you won't need to replace that for a long time just plug in and when the blinking light turns solid its charged.
A:AnswerThis is for cutting hair on your head. It has several attachments which also looks like you could trim the hair in your nose and ears. I couldn't handle it for it was to big for my hands. Plus I have arthritis really bad in them so I didn't dare try cutting my hair.
