A warranty is a promise made by a manufacturer or seller to repair or replace a product if it has defects or issues within a specific time frame. Warranties can vary in length and coverage, often depending on the type of product, such as electronics or appliances. There are two main types of warranties: express warranties, which are clearly stated, and implied warranties, which are automatically understood based on the product's nature. Warranties help protect consumers by ensuring that they receive a functional product and can seek recourse if problems arise.