Wahl 9918-6171 Cordless Rechargeable Beard Trimmer Clipper ShaverAbout the product Wahl Clipper is the #1 brand of beard trimmers and hair clippers*. The brand used by professionals since 1919 Long Lasting Self Sharpening Blades Wahl's unique Self Sharpening Blades Technology gives you the long lasting sharp blades. Wahl high carbon precision ground blades for unbeatable trimming results Blade Guards Three individual guide combs and Wahl's exclusive 6 position adjustable guide comb let you maintain an even length