A warranty that obligates the seller to repair or replace a defective product without cost to the
buyer and within a reasonable time is...

limited warranty
implied warranty
full warranty
none of the above

The type of warranty described is a limited warranty.

Limited in the context of warranties are limits on how the warranty applies to the item.
Another example of a limited warranty is a warranty that is voided after the product is tampered with. A time limit on a warranty, whether for three months or ten years, is a clearly stated limit on how long the warranty applies to the manufacturer and customer.