After quite a search, I found a DVD-player that can make bigger screen captures. (VLC Media Player) . It is now pretty clear this is not a DW-5300, but a DW-290.
Left the DW-5300, right it's succesor, the DW-6800.The DW-5300 is a kind of DW-5600C on steroids. It has the 901 module with the light bulb. I think the DW-5300 has been produced for about a year. It’s not a real rare watch. In March 1995 this model was successes by the DW-6800, which featured the EL Backlight feature. Although the space around the display and the structure of the bezel are different, it still has the same similar look as a DW-5600, but then bulky.
written his review.
As on most G-Shock models, the Adjust button is somewhat recessed in the case.