Our brand name units come with a 5 year warranty and a 30 day full money back satisfaction guarantee. If for any reason you are not 100% satisfied, you may return your product for a full refund. Our devices come with Quick Start Guides and manuals so you can experience, safe and effective pain relief within minutes. Have questions? Email us or call us at (888) 633-7360. We ship daily Monday to Friday. All products on the website are in-stock for same day shipping when ordered before 2pm. We look forward to becoming your one stop shop for drug free pain relief. We look forward to working with you and hope to hear your success story.