Oh yeah, that's only if you're thinking about returning the device for a refund.. If anything is wrong with your device you should be okay with just your warranty. I just checked, its 21 days from the date of the order of the replacement.
Oh! So you mean I'm not restricted to 15 days to decide if I want an exchange/replacement? I don't plan on returning it, I love it so far!
Yeah that's more than enough time to decide which one's better.