Hi,
The watch you are talking about is the Abacus version of the 1481010 range (module D410), and came in 4 variations: 3 plastic (grey, blue/grey, and beige) and 1 metal (silver).
The abacus system works with green/orange lights counting as 1, and red as 5 (so the picture below says 09:20 (0, 5+4, 2, 0).
There is also a more dot matrix looking version (D420) but this seems to be even more rare (but there were more colour combinations made).
If you can apeak Japanese, the auction sites in Japan occasionally have them, but you have to look for a long time to see them (I've only seen 6-8 for sale in 4 years, compared to 1-2 on E-Bay), so good luck!!