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Grand Seiko's new SBGW327 is a 99-piece hand-wound exclusive inspired by spring water

The Grand Seiko logo and the seconds hand are finished in rose gold.
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The Grand Seiko logo and the seconds hand are finished in rose gold.
Grand Seiko China has announced the SBGW327, a hand-wound model limited to 99 pieces and sold only in mainland China. Its pale blue textured dial is themed on clear spring water, and the 36.5 mm steel case holds the 72-hour 9S64.

Grand Seiko has a new regional exclusive; this one is harder to get than most. The SBGW327 was announced by Grand Seiko China, it's limited to 99 pieces, and it's sold only in mainland China.

The name is 澄泉, Chéng Quán, which translates to clear spring water. The dial follows that: a pale blue surface with a fine texture across it, meant to reference the clear natural springs found throughout Japan. Against that, the Grand Seiko logo and the seconds hand are finished in rose gold, which is the only warm color anywhere on the watch and does a lot of work for how little of it there is. It comes on a grey-brown grained leather strap with pale blue stitching that picks the dial color back up at the wrist.

The case is stainless-steel and small by current standards. It measures 36.5 mm across, 11.6 mm thick and 42.7 mm lug to lug, thanks to the faceted treatment Grand Seiko took from the 44GS of 1967.

The limited-edition utilizes the 9S64, Grand Seiko's hand-wound caliber. It runs at 28,800 vibrations per hour on 24 jewels, holds about 72 hours of reserve, hacks, and is rated at +5 to −3 seconds a day under Grand Seiko's own standard rather than COSC.

There's a pattern worth noting. The same 36.5 mm case and the same 9S64 turned up in the SBGW321, a European exclusive themed on Japanese koi, limited to 300 pieces at €6,100. China's version runs at a third of that number.

Grand Seiko hasn't published a price for the SBGW327, and nothing suggests it will reach buyers outside mainland China. Given 99 pieces, it probably won't need to.

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> Expert reviews and news on laptops, smartphones and tech innovations > News > News Archive > Newsarchive 2026 10 > Grand Seiko's new SBGW327 is a 99-piece hand-wound exclusive inspired by spring water
Anubhav Sharma, 2026-10- 3 (Update: 2026-10- 3)