We send all items with tracking number. Description audio technica ATH-A500Z Art Monitor Headphones Black Import With Tracking Condition New Notice The voltage for our electronic item is 100V. Actually the item can be used in the United States, but we recommend using a transformer for safe use over a long period of time.?If you use this item in countries where the voltage is more than 100V such as 200-240V, the item will be damaged unless you use a proper transformer.?? Manuals and instructions are basically Japanese only. Manufacturer warranty is valid only in Japan. Customs and import tax Important duties, taxes and charges are not included in the item price or shipping cost.These charges are the buyer's responsibility.?Also we can't declare any lower value on custom invoice.