i've found that neat device which should help in lottery wins. as you already might have figured out by yourself, it quite ressembles to an other well known game device from the past.

and yes you're right, there's nothing less inside than a wonderswan color hardware. everything, the screen buttons, fixing screw, contrast poti etc. are placed at the very same position.
i will open it later on to watch the inside. hope that there's still cart slot.
btw. it's made in japan 2001, the WSC in 2000. probably this manufacturer (Nihon IT Contents) was looking for a cheap hardware to use for their NAVI GET 4 OKU device, and found out, that the WSC was already heading south, so they could get WSC devices for the cheap.