It depends on what type of product you purchased, where you purchased it, and whether it was professionally installed. In short, speakers are warrantied for 1 to 3 years if purchased from an authorized retailer; amps are warrantied for between 3 – 6 years depending on the retailer. Radios are warrantied from 1 to 5 years. In all cases, you will need to have the proof of purchase. It's smart to register your product initially and include a copy of the proof of purchase at that time, that way we have your information on file for the years to come. Here’s a link to our detailed warranty information: https://bossaudio.com/policies/#StandardWarranty.