Low Bog-Down Factor Rating
Extremely quiet, but that didn't matter on my old/deaf King Charles Cavalier Spaniel ("Cavy").  I bought this for under $20 on a site other than Amazon (rhymes with "searay").  Fully charged, this thing bogged down and the combs/clipper got "loaded" with the thick/soft fur of our Cavy.  Disastrous results.  Little guy now looks like a punk-rocker.  But, it did save us a $60 grooming fee....which, in retrospect, might have been money well-spent. The instruction booklet was quite comical with its "Chinglish" instructions.  I will say that in the nearly hour it took to groom Julian, the clipper showed no signs of power reduction.  However, the power level was "medium", at best.  Coming back to Amazon to buy a stronger/corded groomer from a well-known manufacturer like Wahl.
Rating: 2 stars