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The new GMAS2100 series downsizes the popular GA2100 to create a simple and slim design
600 vibrations per hour
Ink blue ion-plated stainless steel case with a cognac leather strap
42 mm black ion-plated stainless steel case with a black-toned dial on black leather strap
Automatic movement with manual winding
Seiko Presage Classic Series Automatic Men's Watch SPB478J1 Promaster Aqualand The new GMAS2100 series downsizesThe Presage Classic Series SPB478J1 is powered by the calibre 6R55, a new calibre with a power reserve of 72 hours. Its textured dial expresses the softness and suppleness of woven silk, the use of which is closely linked to Japanese culture. The case is domed and the double domed sapphire crystal echoes the contours of the curved dial. A new multi row bracelet, whose design is inspired by the 1970s, provides a feeling of elegance and comfort on the