Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Can I sharpened serrated steel knife with it?
Document: I bought this one to replace the light weight Smith's pocket sharpener that only lasted one season. This one is metal and has ceramic 'rods' instead of Smith's ceramic 'blades' and a real bonus is that these rods can be removed, cleaned and reversed to get a lot more milage out of them. I have sharpened all my knives with it including a serrated Cold Steel folder and a Vitorinox multi tool blade.
Now first and foremost, this is not made for your higher quality, harder steel blades such as a Kershaw and the more expensive ones; You need a whetstone for that! For sharpening cheaper blades that don't have as hard of steel it is very awesome and works very well. I've made new edges and sharpened many blades with this thing. I was even able to get my serrated edges razor sharp with the sharpening rod. Great product, definitely will be buying another when mine eventually wears out
As with everything Lansky sells, it does the job! I have one of the sharpening kits and this is a great adjunct to that kit. Exactly what's needed for a quick touch-up on a knife that doesn't need serious sharpening. I hate it though when the darn folding steel (serrated edge sharpener) pops out while I am using another feature of the sharpener and then folds up when I am trying to use it! It kept it from that 5th star.
I sharpened around 10 knives (razor Sharp) some that were so dull a butter knife would cut better in under 20 minuits  it even sharpens serrated blades I would highly recommend
The knob above has presets for kitchen as well as hunting knives. This sharpener is well worth its price as the sharpening blades are easily removable. The blades are still sharp after sharpening 20 knives. I sharpened my main santoku knife, chefs knifes and serrated steak knives and I was very impressed. Highly recommended.
I have had this for several months now and have sharpened everything from my pocket knife that has a blade that is half serrated, to kitchen knives, and an assotment in between.The grey stone is aggressive enough to take out some small blade dings, and the white ceramic does a great finish job at the right angle.The edge comes out great. The size is very easy for storage out of the way. And the variety of blade types you can sharpen is all available.
Functionally similar to other sharpeners but I like the ceramic stone addition and the fine tuning steel rod. Its ability to be used on serrated knifes is a plus that my other hand sharpeners don't have.
Works great on smaller folder knives or knives that without a thick hard steel. Sharpened a few dull folding knives to very fine blade in only a few strokes. However, the BladeMedic didn't achieve the same kind of results with my heavier and thicker Ka-Bar. Overall, it's great at what it does. Keeps a nice sharp blade if you're out camping or on the go.
I have used the Blade Medic to sharpen the following blades with great success: Swiss army knife, Ka-Bar BK14, Cutco kitchen knives, cold steel B&T, Canadian belt knife, Mora companion HD, and OKC SP8.
I have sharpened several blades on this thing and it seems to do a great job on all. This includes steels such as 440 HC, S30V, VG 10, and zdp 189. It also does an adequate job with serrated edges.
Answer: yes