Compare Marathon Swiss Steel Navigator Blue Yonder with Tritium Tubes #WW194013SS-1301 Movement: Swiss ETA F06.412 quartz (battery operated) Case: Blasted Stainless Steel, 41mm diameter x 11mm thick. 48mm tip to tip Crystal: Sapphire Band: Blue FKM Rubber, 20mm Island Watch Price: $1,260.00 Was: Sale Price $1,260.00