The warranty is valid for 3 years from the original purchase date. All claims must be accompanied by the original proof of purchase (receipt) and are subject to product inspection for a one-to-one exchange. Warranty service is available only at the CUEVIA office. All warranty replacements must be approved by CUEVIA in advance. Buyers are required to return the defective product and present the approval confirmation email when visiting the CUEVIA office. The replacement must be collected within 14 days from the date the approval is issued.