Grand Seiko Heritage Collection Manual Winding Spring Drive 3 day Power Reserve 40mm Watch 44GS 55th Anniversary Limited Edition 1,500 Pieces Calendar Case & Build: Weighing 127 YBB62079600100U Case & Build: Weighing 127 twin barrel construction the mountains and the serenity of the night sky The dial has a deep blue color that captures the alluring beauty of the full moon in the night sky above the Shinshu mountains that can be seen from the studio in Shiojiri where this and all Grand Seiko Spring Drive watches are created The signature glide motion seconds hand of Spring Drive is in a gold color and captures the grandeur of the night sky as it sweeps silently across the wide dial