Translation

保証 / 製品保証 / 保証書

Meaning

A warranty is a formal promise that a product, part, or service will meet certain standards and may be repaired or replaced if it fails. It usually covers defects, not every accident or loss. The trap is confusing warranty with insurance.

Examples

• この洗濯機には三年保証が付いています。
  This washing machine comes with a three-year warranty.
• 保証期間が切れる前に修理を依頼してください。
  Ask for repairs before the warranty expires.