It is 100% plastic. buttons are cheap.
If you handle it with care, it's OK
The only thing I like about this keyboard, it is the keybed feel. It is not hammers, but I like it !!! The keyboard is 88 keys avec very lighweight. It's very good
I hope your sound module own velocit curves, because the VMK doesn't. The VMK curve has a huge dynamic. So you have to press keys very hard to get the 127 velo. But it is very realistic compared to a true piano
Dan