Here's my review of a brief use of the Keyboard:

Performance - Touchpad is a ok, there is some accuracy error but not too bad.
Double tap sometimes work, sometimes doesn't.
Keypads are also similar where sometimes you feel the click but the key press is not registered.

Range - Up to 20 feet with full charge.

Weight - Very light

Ergo - As it looks the keypads are very close to each other so the typing is definitely key-by-key, and the snap force (needed to actuate) is slightly on the high side compared to handphones. but its most similar to QWERTY H/P

Reliability - This product died after 2 months + of use after falling from my bed of 2 feet high to the floor of tiles. Now the touchpad has a mind of its own. Apparently the meager warranty does not cover this kind of incidence which goes to show how reliable Made in China stuff are.

I really advise buyers to either not drop this thing (which is hard since its such a tiny device and very light) or carpet it or avoid (lol).