Fallkniven DC3 Sport Sharpening Stone - Compact Knife Sharpener for Outdoor, Hunting & Camping Use

Love this stone, it is small, watch fingers if you're going to hold it your hand to use, case doubles as a strop, while you can get a good edge that is shaving sharp, this won't replace your bench stone or sharpening system, requires no oil or water but I wouldn't say not to use any. Definitely a good buy. Dc4 may be an inch longer and a little wider, but for pocket knives, can't beat this one, fits right in your pocket