My beloved SBGA413 was never meant to be the diver equivalent of something like the classic vintage
link 44GS. Remember – early Grand Seiko dive watches like the SBGA029 broke entirely new ground for Grand Seiko as the company's first flagship dive models. You can very clearly see how watches like the SBGA029 eventually helped pioneer
link the hybrid titanium/ceramic case design of the
citizen blue angels Spring Drive Chronograph and then, eventually, more radical profiles like Evolution 9 case format.