un diver como hay pocos, juzgad vosotros mismos
This is a first Grand Seiko diver's model, they came with either bright titanium version SBGA031(shown on the pic) and SS variant SBGA029, both has 44mm in diameter case (14mm thick) and easy to remove bezel (just like the Prospex Marinemaster Spring drive GMT does) anti reflectable coated sapphire crystal, bracelet has built in diver's extention. Black dial only for both versions.
It came with 9R65 automatic Spring drive, it rated +/-15 second per month accuracy, 72 hour power reserve.
MSRP is $6,037.53 for SS model and around $7,096.74US for the bright titanium version (in today's rate), both are for the domestic Japanese market only.