Achdaway products are manufactured with high-quality parts designed to last. If any malfunctions occur, your limited warranty covers:• ACHEDAWAY Device & Motor - 2 years• ACHEDAWAY Lithium-ion batteries - 6 months•ACHEDAWAY Massage Attachments - 90 days (You can order new massage attachment at ( www.achedaway.com ).If the product fails due to defects in materials or design process within one year, the company will repair or replace parts or replace new products for free, except in the following cases:1.Improper human use or damage to the equipment caused by transportation.2.Unauthorized disassembly and repair of this equipment.3.Failure to follow the instructions.4.The product is damaged due to the abnormal storage or maintenance environment of the customer.5.If the proof of purchase date is not provided, the company will have the right to refuse the warranty.