Please keep your proof of purchase (invoice/order) within 1 year from the date of invoice/shipping . You will need to provide proof for subsequent returns, exchanges, and repairs to protect your rights.To ensure customer rights, please contact our LINE customer service before sending the product for repair, provide the purchaser's name, phone number, purchase platform, and proof of purchase, and check and confirm the product warranty information.If you need repairs, please contact LINE customer service and describe the product problem in detail. The date the repaired product is received will be used as the basis for determining whether the product is within the warranty period.Please include the following information when sending repaired products:1. Causes of product abnormality2. Name, phone number, and address of the recipient to whom the item should be returned after repair