ipod nano 5G charger problem

hi
i want to purchase a charger for my ipod nano 5G but very confused
i have a adapter which i use to charge my mp3 player
it specs:
input: 110-240V AC 10mA
OUTPUT: 4-6V DC 800mA
this adapter simplt has a usb slot in which u can plug ur usb cable and other end to ur mp3 player
BUT THIS IS NOT ABLE TO CHARGE MY IPOD NANO 5G
so on ebay i found a adapter which says it can charge 5G .. its specs:
* Input : Ac 110-240v 50/60hz
* Output : Dc 5v / 800-900ma
so i dont know how can this b able to charge my ipod or not
also i want to know whether this apapter with specs:
Input: AC 110V-220V
Output: 12V/1.0 A
can this charge my nano or not
pls help
Answer #1
no help ?? and that for ipod