10 Speeds this thing has power it plugs in and it is ready to go! Great for those aching muscles and other needs! Easy to use it has a soft flexible easy to clean head. This really works well I used it on my lower back because I had a mussel spasm and it really helped. No batteries or charging issues because it plugs in only issue with that is that you have a cord but if you want more power it is the way to go! Low noise!! This is the kind of item you will be glad you have when you get those aches and pains. Well made durable you will have for years.