The SleepScore Max unit can be returned within 30 days of the date of purchase. The customer is responsible for the cost of return shipping. Please ensure that you return the complete packaging, along with all the accessories that were supplied with the original product. To return your purchase, you must call (858) 299-8995 or email support@sleepscorelabs.com and you will be provided with the necessary instructions to complete a return or exchange. The refund will be issued once the product has been received and inspected.