Tamagotchi Nano vs. Tamagotchi Mini

What is the difference??? I just came accross a couple of youtube videos and I thinkthey are adorable, but I'm not sure what the difference is. My guess is that one is a US version and the other is Japanese? If not can somebody please tell me the difference?

Thanks!!!

I get this from Wikipedia:

The Tamagotchi Nano is the successor to the older Chibi Tamagotchi or Tamagotchi Mini, it features a larger screen, and New Characters such as Spaceytchi and Lovelitchi/Lovelin, in addition, you can attach them to the back of your Tamagotchi iD.

Tamagotchi Nano

-Clean up poo.

-Cure sickness.

-Feed

-Check stats by looking at character.

-Play game called 'Tamagotchi Catch'

-Attach to cellphone, Tamagotchi-iD, iD L or +C

-Discipline by pressing C

-Bigger screen. (but input deep inside)

-Bigger shell. (so its no too easy to lose)

-Size is 60% big as a iD

That's it.

Chibi Tamagotch (mini)

-Feed

-Clean poo

-Cure Sickness

-Check stats by looking at character

That's all.

So I would recommend the Tamagotchi-Nano.

You guys are awesome. Thank you for helping me figure out I'm searching ebay now!