We guarantee the authenticity of the item. However, we will take measures to prevent swapping. Can be installed on all models. Please check the photos carefully. You can order in bulk with other products, and price negotiation ispossible. This applies to all electronic items that have not been tested for operation with respect to junk items. Please check the voltage before ordering. Except for our overseas compatible products, the voltage is Japanese specification (AC100V 50/60HZ). For those in 120V-240V regions, please use a down transformer. I promise to deliver our products toyou safely, securely, and carefully. For the other countries. Please check by lists or ask us directly. They will return to their original state when opened. During the end of November to the end of December, most ofshipping will be delayed, so please order for Christmas in November. Your satisfaction is our priority and I promise to offer a pleasant shopping experience to you. I try to satisfy the customer. Thank you very much for looking at this item. International Buyers – Please Note. Thank you for your understanding.