Heir Audio Custom IEM products carry a limited warranty against poor fit for a period of thirty (30) days from the original shipping date. Material defects and craftsmanship is covered for a period of one year from the original shipping date. If your product is within warranty it shall be repaired or replaced at our own discretion. Damage or breakage due to ordinary wear and tear, misuse, abuse, negligence, accident, excessive volume, shock, misapplication, unauthorized repair, acts of God, or modification of, or to any part of the Custom IEM is not covered by the warranty. Any modifications done to the Custom IEM will void the warranty. Only materials and labor are covered by the warranty, drivers are excluded. If it is necessary to remake or modify your Custom IEM due to unsatisfactory fit, shipping costs will be the responsibility of the end user.The original warranty is non-transferable. You need to take care of the shipping cost.