I find the blue a little bit off, maybe it is just the lightening of the pictures (I own a gen blue 26331st, I assume the blue is similar). However, it is very hard if not impossible for a non trained eye to discern a black 15500 zf from a gen on the wrist. ZF really did a good job. I have only seen the grey gen once or twice so I cant really judge for the grey one
edit: it seems that some discussions with gen owners already address the grey one
edit: it seems that some discussions with gen owners already address the grey one
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