Grand Seiko Sports ‘Hotaka Mountains’ Spring Drive GMT Watch

This watch design is inspired by the view from the Shinshu Watch Studio, where the Hotaka Mountains stand tall, formed by the volcanic activity of the past. With a height of over 3000m, they have steep slopes and rough cliffs from erosion by the wind, snow and ice.

The Grand Seiko watchmakers’ pride in their surroundings is regularly represented in their designs – from engineering watch movements which emulate the smooth motion of time passing, to creating dials reflecting the beauty of Japanese nature.
The dial of this model represents the incredible power of the Earth, through its green pattern. The highlands at Hotaka have a short summer, so the deep green colour reflects the vast vegetation on the rich volcanic soil.

This watch is powered by the unique in-house 9R66 calibre Spring Drive movement that generates energy like a traditional mechanical watch but combines this with an electronic regulator for superior precision and accuracy. The signature of Spring Drive is the smooth motion of its second hand which moves in a silent and beautiful glide motion, rather than the second tick of a quartz watch or the rapid beat of a mechanical watch. This is a GMT triple time zone model allowing its user to track three time zones at the same time with a 200m water resistance.

Every Grand Seiko features signature high standards of precision, durability and legibility, handcrafted in Japan by Takumi artisans. Grand Seiko: beautifully, precise Japanese watchmaking, from the pinnacle of Seiko Watch Corporation’s in-house manufacture.

Movement

Accuracy:±15 seconds per month (±1 second per day)
Calibre:9R66
Movement Type:Spring Drive
Power Reserve:72 Hours

Watch Exterior

Case Diameter:44.0mm
Case Length:50.8mm
Case Thickness:14.67mm
Case Material:Stainless Steel
Case Back:Screw case back
Strap/Bracelet:Stainless Steel
Lug Width:21.0mm
Clasp:Three-fold clasp with push button release
Dial Colour:Green

Other Specifications

Crystal Coating:Anti-reflective coating on inner surface
Crystal Type:Dual-curved sapphire crystal
Watch Function:GMT
Water Resistance:20 bar
Magnetic Resistance:4,800 A/m
Weight:186.0g
LumiBrite:Lumibrite on hands, indexes and bezel
Other Specifications:30 jewels, Calendar-linked time difference adjustment function, Screw-down crown, 24-hour hand (dual time display function), Power reserve indicator, Rotating bezel (24-hour display)