Smith's Pocket Pal Knife Sharpener quickly sets your edge with carbide blades and the ceramic stones give you a razor sharp blade. The folding, tapered diamond rod sharpens serrated edges and gut hooks. Carbide blades and ceramic stones are replaceable. Includes lanyard hole.
This thing is a little rough to use as it's so small. It's purpose is obviously not to get a razor sharp blade but rather to do a touch up in the field and it works decently well for that. I've tried to get the rod under control but it's so small I end up cutting myself or not being effective at sharpening. Overall for the draw through strokes it's a decent deal though.