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Refund and Return Policy

At Calvin Rig, we specialize in high-performance Bitcoin mining hardware. Due to the specialized nature of ASIC mining equipment and the high volatility of the cryptocurrency market, our policy is designed to be fair, transparent, and strictly enforced to protect both our business and our community of miners.

1. Quality Assurance & Pre-Shipment Verification

To guarantee that you receive a fully functional Bitcoin solo miner, we implement a strict Pre-Shipment Verification process based on your selected edition. Every unit also undergoes pre-shipment video verification (serial number, screen display, and operational status) to help expedite any future support requests.

  • 🔹 Standard Edition: Before dispatch, the hardware is powered on to verify operational status.
  • 👑 Premium Edition: The hardware undergoes a full verification process. Your unit ships pre-configured with a wallet placeholder, and two specific Mining Pools are configured for you. Before mining begins, updating to your own wallet address is the one setup step we leave to you. This protects your keys and your coins.
  • 💎 Diamond Edition: Same rigorous pre-shipment testing and video verification as above. Diamond-tier units pair with our companion app via your own phone, so pool and wallet setup takes place after your unit arrives; we maintain optimized factory defaults to ensure a seamless Bluetooth setup experience for you. This edition includes 180-Day Local Unit Replacement coverage (see Section 4).

2. Order Cancellations

We understand that plans can change. If you need to cancel your order, please contact us immediately at support@calvinrig.com or WhatsApp +852 9538 7305 (https://wa.me/85295387305) with your order number.

If your order has not yet shipped, we will cancel it and issue a refund as follows:

- Paid by credit/debit card  (Visa, Master, American Express, Union Pay, Google Pay), PayPal, or another card-processing payment gateway: Since payment providers do not refund their processing fee to us, a non-refundable processing fee (typically 2–4%, depending on your payment method) will be deducted from your refund.
- Paid by direct bank transfer, FPS, or our dedicated crypto wallet (USDT/USDC): No fee applies — you will receive a 100% refund.

Once your order has shipped, cancellation is no longer possible. However, you are fully covered by our Refund & Return Policy below as soon as your order arrives.

3. 14-Day Return Policy for Unopened Items

We accept returns within 14 days of delivery under strict conditions. Given the sensitive nature of computing hardware:

  • Condition: The item must remain strictly unopened, with the original manufacturer's packaging intact.
    ⚠️ Note on Customs Inspections: International shipments may be opened and inspected by customs authorities. If your package shows signs of customs inspection (e.g., official customs tape or resealed packaging), this does not constitute a "used" or "opened" item by Calvin Rig and does not affect your return eligibility under this policy.
  • Restocking Fee: A 25% restocking and administrative fee will be deducted from the refund amount.
  • Shipping Costs: The buyer is responsible for all return shipping costs. Original shipping charges are non-refundable.
  • Customs Abandonment Policy: For DDP regions, we cover all duties and taxes as part of delivery. For non-DDP regions, if a package is returned or destroyed because the buyer refuses to pay local import taxes, this does not qualify for a refund, as import compliance in non-DDP regions remains the buyer's responsibility.

4. Dead on Arrival (DOA) & Shipping Damage

Every unit completes our pre-shipment QC checklist and video verification before dispatch; this record helps us resolve any DOA claim quickly, though it cannot fully rule out transit-related faults.

  • Reporting: Please report any DOA issue to support@calvinrig.com within 7 days of confirmed delivery, along with your order number and a short video showing the fault.
  • 🔹 Standard & 👑 Premium: Once verified, you cover shipping your unit to our repair center — we cover the return shipping of your repaired or replacement unit back to you. This 7-day DOA benefit is an upgrade on our standard repair terms.
  • 💎 Diamond: DOA claims are simply the first instance of your 180-Day Replacement Guarantee — you cover shipping your unit to us, we cover shipping your brand-new replacement back to you, for the full 180 days.

5. Limited Hardware Warranty (Edition & Model Dependent)

We provide limited hardware warranties for our physical computing nodes. Please refer to our Warranty & Support page for full coverage details and model eligibility.

⚠️ When Does My Warranty Start? Your warranty period begins from the date of confirmed delivery to your address, as recorded by the shipping carrier's tracking system.
  • 🔹 Standard & 👑 Premium (Repair): 3-Month Local Warranty. Covers labor and diagnostic fees. Replacement parts are invoiced separately unless covered under manufacturer warranty. Within the first 7 days of delivery, DOA claims qualify for free return shipping.
  • 💎 Diamond (Replacement): 180-Day Local Unit Replacement. If a genuine fault is confirmed within 180 days, we ship you a replacement unit at no additional cost. You cover shipping to the nearest service point; we cover shipping your replacement back.
  • Exclusions: Warranty is voided by overclocking, custom firmware, improper power supply, physical/water damage, or unauthorized disassembly.

6. Technical Support & Setup Assistance

Every purchase includes access to our technical support. We offer remote consultations and guided walkthroughs to ensure your hardware is hashing correctly. For absolute beginners, we offer an optional Setup Optimization Service (e.g., for Premium orders) to assist with pre-configuration, or guided support to help you get your Diamond unit hashing safely.

7. Lost or Stolen Packages

All international orders include end-to-end tracking. For DDP orders, if a package is confirmed lost by the carrier, we will arrange for a replacement unit to be sent.

8. Delivery & Post-Delivery Responsibility

Once the carrier marks your order as delivered, responsibility for the package transfers to the recipient. CALVIN RIGS TECHNOLOGY is not liable for parcels reported missing after confirmed delivery.

9. Chargeback & Dispute Policy

Initiating a bank chargeback without prior communication is considered "friendly fraud" and a violation of our Terms of Service. We will vigorously dispute unwarranted chargebacks.