Through web site

After clicking "Add to Cart" on each product detail page, please select the "Check out" button to proceed with the order process. Please enter your payment method, delivery address, and other customer information for completing your purchase.

By E-mail

We will take your order by email if your order is in large quantities and you plan to place an order in excess of US$ 5000. please contact us by sales@yakumo-kk.com in that case.


Credit card

Visa, Mastercard, American Express, JCB are available.

Bank transfer (prepayment)

Please note that products will be shipped after we confirm the payment from the customerspan>. We will inform you of the bank account to which you would transfer the payment when your order is confirmed.

Please note that your order will be cancelled if payment is not confirmed within 5 days of placing your order.


Apple Pay, Google Pay, Shop Pay are also available.

Condition, Warranty


All items handled on our website are second-hand or used items. The condition of each item varies, so please refer to the following product condition ranks assigned to each item for your consideration.

Unused. Including the case where the package is opened.
Used A
Used just once or twice, kept in great condition.
Used B
Used for a certain period of time. Kept in good condition but scratches and dirt can be seen.
Used C
Used for a long time.

Initial defect warranty

Although we take every precaution to ensure that our products are in perfect condition, we offer a initial defect warranty against defects in transportation or hidden defects. The period of warranty differs depending on your location, so please contact us before you make order.

Warranty Coverage

The warranty is limited to products purchased from this website and used in the country to which the product is delivered. If any of the following conditions are met, the product will be excluded from the scope of coverage even if it is still within the warranty period.

  1. Malfunction, defect, or damage caused by conditions other than those of the product sold, such as the design or program of the customer's equipment or software.
  2. Malfunctions, defects, or damage caused by conditions, environment, handling, or usage methods other than those described in the instruction manual or user's manual.
  3. Malfunctions, defects, or damage caused by consumables (battery, fuse) wear and tear.
  4. Malfunctions, defects, or damage caused by natural disasters or other causes for which we are not responsible.
  5. Malfunctions, defects, or damage to products sold as "junk".
  6. Malfunctions, defects, or damage resulting from parts removal, parts replacement, modification, or repair by the customer.
  7. Malfunctions, defects, or damage caused by reasons that could not have been foreseen by the scientific and technical standards of our company at the time of shipment.

The warranty does not cover secondary damages (equipment damage, lost opportunities, lost profits, etc.) and any damages or accident compensation induced by the failure of the product.

Please use our products only for applications that will not cause serious accidents in the event of a failure or malfunction of our products. Please use the product in a system in which in the event of failure or malfunction, the backup or fail-safe functions are performed other than our product.


Delivery service provider

It depends on the final destination. Please contact us for the detail.


We generally ship within 1 to 2 business days after your order is confirmed by payment. Please note that we are closed on Saturdays, Sundays, and national holidays.

Shipping charges

Shipping charges vary for each product, so please check each product detail page.