This sharpener always maintains a stable working and will not overheat to stop working, allowing you to enjoy the sharpness of all tools at once Global voltages design, electric sharpener suitable for 100-240V voltages, suitable for customers worldwide Its compact body is easy to store in your kitchen and doesn't take up too much space even in crowded kitchens, making it your great sharpening tool Place the blunted in an inclined position, tightly attch to the outer wall, and then pull it from the outside to the inside for sharpening. Grinding each slot 2-5 times to enjoy the sharpness of the tool, and enjoy sharpness in just 30s, saving more time Adopting a professional two-stage , quickly sharpen and polish your cutting tools. The rough grinding stage quickly sharpens your while the fine grinding stage smooths the edges, allowing you to easily achieve professional result