on first use, I noticed that this mower (yet well-rated) was not really effective compared to my old philips. Unable to complete the cup of my husband (who has yet short, very fine hair). I warned about the Amazon online support. Service very serious, I could return the mower at its (I did not have the manufacturer's box) and the reimbursement was not waiting. I was really surprised at this reaction from them and it confirms my attitude to purchase through them.