I posted a thread on this to awhile back but i can't find it. Anyway after hearing from other members and talking to a few groomers i have heard this is not a good product. The groomers i talked to said it is a waste of money and it doesn't work. It's buly and the sensors don't work properly. I went to the cat section of petsmart and got a really nice pair of clippers that was suggested by the groomer and they work great here is a link to them
Groomax® For Cats Deluxe Nail Clipper - New Kitten Center - PetSmart