Grand Seiko

Mt Iwate SBGW311

Reference Number :

SBGW311

Series : Heritage

Retail: $5,900

(As of: 01/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Grand Seiko. If you are interested in selling this watch to us, you can contact us here.

Quick TakeOkay, picture this: You've got the SBGW311, a quiet stunner from Grand Seiko's Heritage Collection, strapped to your wrist. It’s not shouting for attention, but trust me, heads are turning. This isn't your average, flashy timepiece. It's a nod to those in the know, inspired by the misty, lush vibes of early summer around Mt. Iwate in Japan. That dial? A killer green that just feels... alive, like a walk through the forest on a rainy day. And under the hood? The manual-wind Caliber 9S64, which means you're part of the action, winding it up, feeling that smooth resistance. It's a 72-hour power reserve in there, so it’s always ready to go. This isn't just a watch. It’s a whole mood. Elegant, understated, with a hint of that "I've got great taste, and I'm not afraid to show it" vibe. It's for those moments when you want your style to whisper, not scream, making the SBGW311 a true connoisseur’s choice.

DescriptionThe Grand Seiko SBGW311, a part of the esteemed Heritage Collection, stands as a tribute to the early summer rainy season, or Tsuyu, in the region surrounding Mt. Iwate in Japan. Encased in stainless steel, this timepiece features a case diameter of 36.5mm, a lug-to-lug measurement of 42.7mm, and a thickness of 11.6mm, presenting a compact yet elegant profile on the wrist. The watch is designed with a screw case back and a box-shaped sapphire crystal, treated with an anti-reflective coating on the inner surface to enhance visibility. The timepiece is secured with an 18mm stainless steel band, finished with a three-fold clasp that includes a push-button release mechanism. This model is water-resistant up to 10 bar and maintains magnetic resistance of 4,800 A/m, offering durability and reliability in various conditions. Adding to its functionality, the SBGW311 includes 24 jewels within its mechanism, highlighting the intricate craftsmanship involved in its creation.

At the heart of the SBGW311 lies the manually wound Caliber 9S64 movement, a testament to Grand Seiko's commitment to precision and horological excellence. This movement boasts a power reserve of approximately 72 hours, or three days, ensuring consistent performance over extended periods without winding. The mean daily rate of the movement is meticulously calibrated to be within +5 to -3 seconds per day, measured under controlled conditions in six positions over 12 days before assembly into the case. In normal usage, the accuracy adjusts to +10 to -1 seconds per day, demonstrating the watch's capability to maintain precise timekeeping. It captures the essence of the lush green landscapes and the life-giving rains of early summer around Mt. Iwate. Its design draws inspiration from the iconic 44GS model, initially released in 1967, which established the foundational elements of the Grand Seiko Style. The SBGW311 incorporates these stylistic principles into a modern interpretation, blending historical significance with contemporary design and functionality.

GenderUnisex

SignaturesGrand Seiko

Country of OriginJapan

Case Size36.5 mm

MovementHandwound

Caliber9S64

FunctionsHours, Minutes, Seconds

Power Reserve72 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSolid