The newest Astron references run on Seiko’s 5X83 solar-powered, satellite-linked quartz movement. It is the latest in an ...

But Grand Seiko didn’t get the memo. The brand’s Spring Drive technology — a proprietary battery-free hybrid of mechanical watch movements with quartz oscillators — has become a signature for the ...

For Watches & Wonders 2025, the Japanese watchmaker unveils its Calibre 9RB2, which is accurate within a range of 20 seconds in a year.