Resolved Question: leave mp3 player in car?

is it ok if i leave my coby mp610 4g out in my car over night?
it gets pretty cold/hot here.
very often below 0˚F and over 100˚F.
is that ok for it?
ok balancer. i should have worded it different.
over 100˚F during the day. during the summer.
happy? hahaha!