Excellent product. Came well presented, including a spare battery. I was looking for clippers to groom my thick-coated Shih Tzu.
I purchased these as a "throw away", thinking that if they didn't work, I'd not have lost much, and would then go out and purchase the expensive $100+ dog clippers, which everyone was telling me to buy.
But absolutely no need, as these worked brilliant on my pooch. I experimented with the different combs, and ended up using without a comb attached, as my dog's fur was too matted for the combs to work without snagging.
But once the matted hair had been removed, I used the 3mm comb with great success. I didn't need to change the battery, as the single charge lasted the full brazilian on the pooch.
So yes, I recommend these clippers for doggies with thick coats.