It is a live wallpaper of derivation character "Hachune Miku" from VOCALOID2 CV series Hatsune Miku.
I got the permission of the character use from Mrs.Tamago.
The expression changes by touch or scrolling the device screen.
The color of the background can be selected from a setting screen.
Android OS 2.1 and above.
+docomo GALAXY S(SC-02B)
+docomo GALAXY Tab(SC-01C)
+docomo Xperia X10(SO-01B)
+au IS04(REGZA Phone)
+au IS11S(Xperia acro)
+Acer ICONIA TAB A500(Android 3.0, 3.1, 3.2)