The Grand Seiko SBGA427 is a spring drive dress watch, with a 39mm stainless steel case, 12.3mm thick, powered by the 9R65 movement and a 72-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal. Manufacturer MSRP is $5,800.
Grand Seiko SBGA427 owners widely praise its extensive Zaratsu polishing and the "hall of mirrors" effect created by its diamond-cut indexes, complemented by a subtle, reeded dial and a striking green seconds hand. The 39mm case is noted for its comfortable, tapered bracelet, and the 9R65 Spring Drive movement is visible through the caseback. Some owners report the highly polished Zaratsu finish is prone to scuffs and scratches, with one mentioning a scratch near 1 o'clock. The Grand Seiko SBGA427 sold for $3750. Overall, owners rate the Grand Seiko SBGA427 highly for its exceptional finishing and the unique visual appeal of its dial and indexes.
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