Inspired by Atera Valley
Emerald water.
Spring Drive precision.
The SLGA025 draws its character from Atera Valley in Nagano Prefecture. Its highly transparent blue-green gradation and flowing surface texture evoke the famously clear Atera River, shifting from deep teal to vivid emerald as the light moves across the dial.
The 40 mm case and bracelet are crafted from High-Intensity Titanium, offering a bright finish at substantially less weight than steel. Visible through the sapphire caseback, the self-winding Spring Drive caliber 9RA2 provides approximately five days of power reserve and average accuracy of ±10 seconds per month. The photographed set includes the presentation box, documentation, warranty card, and additional bracelet links shown.