Sierra 63474P: 3 inch tachometer/hourmeter for 4-stroke gas engines Sierra Product Warranty: Covered under Sierra's industry leading customer satisfaction warranty Product Dimensions: Approximately 8 x 8 x 8 inches Item Type: Electric tachometer/hourmeter for 4-stroke gas engines Material: Durable metal or plastic construction Display: 3 inch display size Additional Warranty Details: Warranted to be free of defects in workmanship and materials for the useful life of the product