Grand Seiko Manual-Winding Hi-Beat Moonlit Birch SLGW007

A textured blue dial evokes a moonlit birch tree in this manual-winding, 10-beat mechanical timepiece

This 10-beat, manual-winding mechanical watch is based on the “Evolution 9 Style,” a unique design grammar that takes the fusion of Grand Seiko’s spirit with the aesthetic sensibilities of Japan to a higher level. Its textured, navy-colored dial evokes the bark of a white birch tree illuminated by the moon. Featuring a slender stainless steel case that is a mere 9.95mm thick, the creation has an appearance worthy of a Grand Seiko dress watch. The bezel is refined, with a narrow profile that complements the lugs, whose clean lines are echoed on the dial by the indexes. The manual-winding movement is the Caliber 9SA4, which features a high number of vibrations, 10 per second, to maintain a stable level of accuracy, as well as a generous power reserve of up to 80 hours.

The movement achieves a higher winding efficiency thanks to a rearrangement of the gear train and redesign of the parts, so that Caliber 9SA4 achieves a power reserve of 80 hours with 15 percent fewer crown rotations than are required to achieve the same power for Caliber 9SA5 when winding it by hand. Thanks to its svelte movement, the latest birch-inspired mechanical watch is 38.6mm in diameter and achieves a slimness of 9.95mm.

• SKU: SLGW007
• Brand: Grand Seiko
• Collection: Evolution 9
• Case: Stainless Steel
• Case Size: Diameter 38.6mm Lug-to-lug 45.0mm Thickness 9.95mm
• Dial Colour: Navy
• Crystal: Box shaped sapphire crystal anti-reflective coating on inner surface
• Case-Back: See-through
• Crown: Pull, push
• Water Resistance: Splash Resistant
• Movement: 9SA4
• Movement Type: Manual winding High-Beat. Dual Impulse Escapement
• Power Reserve: 80 hours
• Strap Material: Cowhide leather
  
• Buckle: Three-fold clasp with push button release
• Warranty: 5 year manufacturer international guarantee