Grand Seiko Heritage 30mm
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Discover the STGK033G from Grand Seiko
This refined 30mm timepiece is a modern tribute to the iconic 62GS, Grand Seiko’s first automatic mechanical watch. Its distinctive bezel-free design allows for a seamless transition between the crystal and case, enhancing the sense of openness and elegance. True to its heritage, the watch features sharply defined edges and flawless surfaces achieved through expert Zaratsu polishing. The dial evokes the quiet beauty of cherry blossoms under a misty, moonlit spring sky, with a delicate texture and soft silver hue that capture the serene glow of early spring nights.
Grand Seiko Watch Warranty
The period of the Grand Seiko worldwide warranty is five years from the date of purchase.
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Shipping & Returns
Free FEDEX overnight shipping on all Grand Seiko watches. Our return policy is 10 days for your money back, or 30 days to exchange.
Technical information about this watch
Grand Seiko Heritage 30mm

100M / 10 ATM water resistance
Water resistance indicates a watch's ability to withstand moisture and water. Ratings are measured in metres (M) or atmospheres (ATM). For instance, 30M (3 ATM) is suitable for light splashes, while 100M (10 ATM) and above are ideal for swimming and diving. Regular maintenance helps retain water resistance over time.

Calibre 9S27 Automatic movement
Caliber 9S27 is a Grand Seiko automatic movement that masterfully balances slimness with high performance. It features components crafted with advanced MEMS engineering, including the pallet fork and escapement wheel, while the balance spring is made from the latest Spron alloy. With a mean daily rate of +8 to –3 seconds, a 50-hour power reserve, and 35 jewels, it beats at 28,800 vibrations per hour and includes a date display—combining precision, durability, and elegant design.

30mm case size
Case size, measured in millimetres (mm), impacts the watch's look and fit. Men's watches typically range from 38mm to 46mm, and women's from 26mm to 36mm. Larger cases make a bold statement, while smaller cases offer a classic look. Choosing the right size ensures comfort and style.

50 hours power reserve
Power reserve is the duration a watch runs on a full wind or charge. Mechanical watches usually offer 40 to 80 hours, with some extending to several days. Quartz watches, powered by batteries, last several years. Knowing the power reserve helps maintain accurate timekeeping.
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