Features:1: One click to start two-stage grinding, with four grinding edges for coarse and fine grinding. The two-stage high-speed sharpening makes the dull blade as sharp as new, improving cutting efficiency, and is a good helper for sharpening kitchen knives.2: Sharpen without selecting a location, wirelessly rechargeable, sharpen without selecting a location, get rid of wired, and easily sharpen anytime, anywhere.3: Hidden bottom charging, open the bottom compartment, remove the charging cable and thread it through the guide, close the bottom compartment and connect it to the power supply for charging. When the indicator light is fully lit, charging is complete. Hidden bottom charging, easy to store, does not take up space.4: Usage: 1. Turn on the switch, hold the sharpener with your left hand, and adjust it to the appropriate gear according to the tool. (I is the medium low speed range, II is the high speed range) 2. The knife grinder is divided into coarse grinding and fine grinding, which can be used first for coarse grinding, then for fine grinding, or directly for fine grinding. 3. Hold the tool with your right hand, place the end of the tool into the polishing position, and pull it back to the tip to make it even.5: Suitable for a wide range of blade types, with a 1-bit rough grinding edge suitable for cutting, and a 2-bit fine grinding edge suitable for daily maintenance and grinding. Suitable for table knives, scissors, fruit knives, vegetable knives, kitchen knives, chef knives, etc. Sawtooth knives and ceramic knives are not suitable for this sharpener.Specifications:Product Name: USB Charging Electric Knife GrinderDual design of high-speed gear and low-speed gearInput voltage: 5VPower: 5WMaterial: ABS+stainless steelBattery capacity: 1200mAhCharging time: 2 hoursContinuous use time: 2 hoursFunction: Three speed power regulationSuitable for various knives: blunt cutting knife/chopping knife/multifunctional knife/chef knife/fruit knife/cooking knife.Packaging list:Multi functional sharpener * 1Charging cable * 1Instructions * 1Note:1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.