All of our Accessports sold are guaranteed to be unmarried and ready to go for your car. Each unit sold includes a 30-day warranty against any manufacturer defects. Our 30-day return policy allows you to return your device for any reason for a full refund within that timespan, just pay return shipping! Units must arrive unmarried and in the same condition they were sent out, otherwise restocking fees may apply. Purchases are not eligible for return after 30 days.