I love my razor, it's the best razor I have ever owned. Not only is the design convenient it's a very durable razor. It has five blades and it leaves no hair behind even just after one time going over my legs. The blades last what seems like forever before they become dull. I have had the same blade on my razor for four months now and it still isn't dull. Even after my husband shaved his face with it, he has really stiff and coarse hair on his face. These qualities I love. I have not used the trimmer on the bottom of the razor. My husband used it a few times to trim his beard and he did like it. It has a guard on it that's adjustable. and it requires one AA battery that's included in the package. There's only one bad thing about this razor is the trimmer. Performance wise the trimmer does the job perfectly but however it rusts so quick, shortly after you buy the razor the trimmer rusts so I don't recommend you to buy this razor just because it has the trimmer. Other than that one thing it's a wonderful razor that really lasts. I don't use the trimmer so it's not a big deal for me. The $18 refills are the problem I have. But it's worth the price considering the refill heads last for a long time.