I just received this watch (fulfilled by JustCalculators, ordered thru Amazon). The accompanying booklet describes the item as Casio Module No. 1301 and "AQ 230" is handwritten on the cover. The specification listed in the booklet show the battery as type SR-920W with a life of approx. 3 YEARS not the 10 listed in the Amazon title description. The watch is made in China with Japanese movement.

Otherwise the watch itself is what I expected. The watch is small,light, comfortable to wear, clear analog display, small not so easy to read but very functional digital display, no backlighting of any kind. The analog time adjustment is by pressing the slightly recessed right button which moves the analog time forward only. Overall a good purchase for the price.