Terms of service

Last updated: October 26, 2026

1. About these terms

These Terms of Service apply to purchases made through the Dua Tech online store. The seller is SPIRIT BARU INTERNATIONAL株式会社, operating the Dua Tech store (“we”, “us”, or “our”). For order and product support, contact cs@duatech.jp. For business inquiries, contact business@duatech.jp. Please review the product page, your order summary, and these terms before placing an order.

2. Products and condition

The product page and order summary describe the item being offered. Photos and descriptions should be read together. For a pre-owned or open-box device, the condition and included items may differ between individual units. Please check the selected product and variant before ordering. If you need to confirm network compatibility, included items, or a specific feature, contact us before placing the order.

3. Price and payment

The price, applicable taxes, shipping charge, any cash-on-delivery charge, and the total payable amount are shown during checkout before you submit an order. Available payment methods are the methods displayed for your order at checkout. We do not ask you to send payment to a personal account outside the payment instructions we provide through our official checkout or verified support channel.

4. Orders and availability

After an order is placed, we send the order details to the contact information provided. An item may become unavailable or an order may need clarification. If we cannot fulfill an order after receiving payment, we will contact you and arrange a refund of the amount collected for the unfulfilled item. We will not substitute a different device or change its disclosed condition without your agreement.

5. Delivery and pickup

Available delivery or pickup options, charges, and any delivery estimate are provided before you submit an order. Please provide a complete and accurate delivery address and contact details. Contact us promptly if your order information needs correction; changes may no longer be possible once the parcel has been handed to the carrier.

6. Cancellation, returns, and refunds

For a cancellation or return request, contact cs@duatech.jp with your order number. We will review the request under applicable law and any return conditions clearly disclosed before the order. If an item is damaged, incorrect, or does not match the agreed description, contact us promptly so we can review the issue and the available remedies. Nothing in these terms removes rights that cannot lawfully be excluded.

7. Warranty and support

Any manufacturer or store warranty that applies to a product is stated on its product page, order documents, or a separate written warranty statement. Warranty coverage is not the same as the return policy. For help with a product or an order, contact cs@duatech.jp and provide your order number; please do not include passwords or other unnecessary sensitive information.

8. Privacy and changes

Our Privacy policy explains how personal information is handled. We may update these terms for future orders. The version displayed when an order is placed applies to that order unless a change is required by law or we agree otherwise with you. Questions about these terms can be sent to cs@duatech.jp.