Comes with 2 viewing cones to accommodate different ear sizes.
Magnifies 8-10 times actual size.
Size "AAA" batteries included.
My dog is always scratching his ears for no reason. The vet gave him a clean bill of health. I bought this to keep on hand to save unnecessary trips to the vet. It works wonderfully well. I even use it on family (cleaned off, of course) members to keep ear health under watch. Wonderful, useful item I have no regrets purchasing it. I highly recommmend it.