Please note that these precautions are listed for all products.) 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. Because ceramic is many times harder than steel, it is extremely effective at sharpening most knives and tools made from very hard materials that cannot be sharpened with ordinary steel sharpeners. Ceramics offer excellent wear resistance, durability, and abrasion resistance. The 3000 grit fine grit of the SHARPAL ceramic sharpening rod polishes and refines blade edges, resulting in an exceptionally sharp finish. The removable rubber cap protects the support surface from scratches and reduces chipping and damage in case of drops. The ceramic material is non-toxic, odorless, and rust-proof. Manufactured and field-tested to the highest standards.