GRAEF, a family company have stood for high-quality German made ergonomic & user-friendly products for over 50 years. They offer an impeccable range of durable, expertly engineered products are stunning, simple & superb to use. Main features include:45 Watt This new & efficient Hybrid™ 220 sharpener effectively combines electric & manual Criss-Cross™ advanced sharpening technology for an extremely sharp, burr-free edge with lots of bite Featuring two sharpening stages that provide a strong & durable arch-shaped edge Using Chef's Choice signature 100% diamond abrasives in both stages, Stage 1 is electric for sharpening & Stage 2 is manual for honing & resharpening without power The Hybrid™ 220 features elegant & durable brushed stainless steel knife guides It sharpens straight & serrated edge knives, kitchen & household knives & pocket knives One year limited warranty