A product guarantee is a promise made by a manufacturer or seller that a product will meet certain quality standards or perform as expected. If the product fails to meet these standards, the guarantee often allows the customer to receive a repair, replacement, or refund. This assurance helps build trust between consumers and companies. Guarantees can vary in length and terms, with some lasting for a specific period, such as one year, while others may be lifetime guarantees. It's important for consumers to read the terms carefully to understand what is covered and any conditions that may apply.