求一句英文翻译：（保修时间是多少? 多少天内假如有问题可以拿来换新的吗？）

保修时间是多少? 多少天内假如有问题可以拿来换新的吗？
How long is the warranty on it?
Could it be changed for a new one if it should have any problem?

◆ warranty ---保修单；保修期（包括保修期和其它保证条件）

How long is the guarantee period (time) ?
if there would be any problems how many days does it take to exchange it for a new one?

上面的也写得对，但是对我来说 warranty 应该是不对的。更合适单词是 guarantee.

bo v redu?