The SL Pro 3 weighs 120 gm., has a razor sharp OH opening 3" 50/50 serrated bead blast finish blade made from 420J2 Stainless. It is a frame lock knife and features an emergency signal whistle, pocket clip, lanyard hole, and waterproof in shallow immersions. EXCLUSIVE features: Brilliant L.E.D. light and diamond sharpening steel (half round with one rounded side and one flat) that fit into the frame of the knife.