Magic Keyboard for IPad tech specs

Can anyone find the technical specs of the new Magic Keyboards (big and small). I can not find any trace of details on the web page.

The obvious question I need an answer for is the weight. As the Folio Keyboard is already pushing the small ipad pro having the Keyboard mounted from a tablet to a computer with respect to its combined weight.

Any answer or pointer appreciated.

P.s. why is the apple web page so broken (using it with an ipad pro).