Inspired by Japan’s lush Genbi Valley, a designated Place of Scenic Beauty and Natural Monument, this Grand Seiko luxury watch reflects the serene flow of the Iwai River in Iwate Prefecture, where Grand Seiko’s master craftsmen create its exceptional mechanical timepieces. The dial features a distinctive pressed pattern in light blue-green, capturing the refreshing movement and clarity of the valley’s early-summer waters through refined Japanese design.
At its heart is the Grand Seiko-exclusive Hi-Beat Caliber 9SA5, an advanced self-winding mechanical movement engineered for outstanding precision and performance. Featuring the innovative Dual Impulse Escapement and twin-barrel construction, it operates at a high frequency of 36,000 vibrations per hour while delivering an impressive power reserve of approximately 80 hours when fully wound.
The case and bracelet are crafted from Ever-Brilliant Steel, a variation of "super" stainless-steel alloy known for its brilliance and outstanding corrosion resistance. The bracelet design has been equipped with a more dramatic taper and micro-adjustable clasp to enhance wearing comfort without use of tools.
Combining nature-inspired aesthetics, cutting-edge mechanical engineering, and superior materials, this Grand Seiko Hi-Beat luxury watch embodies the harmony of craftsmanship, innovation, and enduring elegance sought by discerning collectors.
Designed in the Evolution 9 Style, the SLGH027 refines Grand Seiko’s ideals of beauty, legibility, and comfort. Its case blends distortion-free Zaratsu polishing with delicate hairline finishes for a soft glow, while bold, grooved indexes and powerful hands enhance readability.
SLGH005 captures the dynamism of the white birch tree forests near the studio in Shizukuishi, where all Grand Seiko mechanical watches are crafted. To look closely at the dial is to experience the exact same feeling that the visitor to these forests receives and to be brought closer than ever to the true and eternal nature of time.
The case features delicate hairline-finished surfaces on the top and sides, seamlessly framing the mirror-finished areas. The bezel also blends both finishes. Zaratsu polishing ensures distortion-free surfaces, creating bold contrasts of deep shadows and sharp reflections.
The exceptional Caliber 9SA5 is a high-beat movement operating at 36,000 vibrations per hour with an impressive 80-hour power reserve. Its Dual Impulse Escapement and twin-barrel design enhance efficiency, while the finely finished surfaces echo the rippling waves of the Shizukuishi River, seamlessly blending technical mastery with artistic elegance.
Free 2-3 Day Shipping
2-Week Returns & Exchanges
Exclusive 6-Year Warranty
Customer Support
Free shipping is 2-3 business days via Fed Ex Signature Required. Orders placed before 2 pm ET are generally processed and shipped on the same business day, and orders placed after 2 pm ship the following business day. Orders are processed Monday – Friday, and orders placed on Holidays will be processed the following business day. Next Day Service can be purchased for $50 and includes Saturday Delivery when applicable. Please see TERMS for more.
Products may be returned to Grand Seiko Boutique Online within 14 days of the delivery date. Option for a return and refund or exchange is possible when the watch is returned in new, unworn condition, with all original contents included in the package. Upon receiving your return, Grand Seiko will verify the condition of the watch. If there are any missing items, damage, or wear found, you may be subject to fees accordingly. Please be sure to remove any jewelry or other watches before trying on the watch to avoid damage. Please do not size the watch if you return it as it will not be considered new. Please contact the Grand Seiko Boutique Online team HERE to initiate a return. Please see the TERMS for more.
Warranty – All Grand Seiko watches come with a 5-year international warranty. Grand Seiko Boutiques and Grand Seiko Boutique Online provide an additional 1-year warranty at no additional charge for a total of 6 years coverage under the limited warranty. Please see the TERMS for more.
Email, Phone, and Live chat info:
Scheduled hours of operation are Mon-Fri 9am-6pm. However, Grand Seiko Boutique teams may be able to assist at other times depending on availability.
Email: boutique.online@grand-seiko.us.com
Phone: 888-300-8463
