gs138GS138 Diameter 34.00 mm. Thickness 8.75 mm. Lug-to-lug 39.20 mm. Movement Quartz. Water resistant 3 Bar. Packaging type Standard. Your country or region International FOLLOW US Because your feed needs a good dose ofRISE UP GS138. Diameter 34.00 mm. Thickness 8.75 mm. Lug-to