It is one of the old tamagothis. You can probably learn more about it if you go to the tamagotchi ancestors section. It's like a Tamagotchi Ocean, but it's an angel.
Unfortunately, they don't make angelgotchis anymore. The only way you can buy one now is to buy one from somebody else. You can get one from $25-$35. :furawatchi:
I love angelgotchis! I don't have one, but I've always wanted one. To see their growth charts & stuff, go here. I saw one on ebay the other day so you might shop around on there.
go to this website, it has a WHOLE bunch of info on Angelgotchi, devilgotchi, and so on with great pics. here--->Angelgotchi Info
there are more types of tama there so you can look at the other different tamas there too, like devilgotchi, connexion, morino, oceangotchi, santagotchi, and so on.