My granddaughter has the 3/4 size Hello Kitty made by Janome. I bought it for her when she was 8 and she still uses it and she is 18 now. It's the same as the Janome Jem Gold.
The 1/2 size Hello Kitty is a toy, don't buy that one.
The full size Hello Kitty has all the bells and whistles. The Janome Jems are easy to operate and trouble free.