Three Stage electric Knife Sharpener – Stage 1: Coarse Sharpening: Suitable for grinding blunt knives or those need putting an edge. Stage 2: Fine Honing: Suitable for daily maintenance of knives. Stage 3: Polishing: Suitable for polishing the blade after fine grinding. Note frequently used kitchen knives are recommended for Fine Honing once a week and Polishing is recommended after each sharpening of the knife. Diamond material suitable for all metal and ceramic knives. Its 100% Diamond Abrasives & Unique Resin wheel enables sharpen edges in seconds and prevents the Knife from Scratches. Our Sharpener is fitted with 350# diamond abrasive, 600# diamond abrasive, 1000# resin abrasive. Making it best in its class, where others are fitted with 240# diamond for stage 1. Noise-friendly Operation: Noise level of less than 65 dB allowing use in any occasions and timings without disrupting others. A contrast to some knife sharpeners which can be noisy and intrusive on the neighbours. Angle guided function: A 15° Sharpening Angle enables precision sharpening for a razor edge that fits most knives. Keeping the blade at an ideal angle during use, to achieve a more durable arch edge over the entire length of blade. Integrated knife debris collection for easy cleaning; It features a built in Magnetic knife debris collection at the bottom. Making cleaning a breeze after sharpening 3 Year Warranty: Built to last, It comes with a 3-year limited warranty and aftercare services.