HYBRID TECHNOLOGY - This sharpener incorporates both electric and manual stages to create an ultra-sharp 20-degree knife edge DIAMOND ABRASIVES– Utilizing the hardest natural substance on earth, our proprietary diamond abrasives sharpen edges faster and easier TRIZOR ENGINEERED– 3 distinct facets set at different angles that form a longer lasting, arch-shaped edge PRECISION ANGLE CONTROL - Ensures accurate sharpening throughout the entire blade length SHARPENS MOST KNIVES – Sharpens straight edge and serrated knives