This is the cheapest of Otsukas and least complicated. To me it feels lot different to other things on the market, it is supposed to be reminiscent of old 8mm 3 lens cameras and I think you can see that, to me it is also reminiscent of Vianney Halters Antiqua, the case shape is also rather unique as from profile the case starts narrow and widens in the middle before narrowing again. I am terrible at writing up things but there is nice article here: monochrome-watches.com