Submariner Date Tank it was the first to

it was the first to feature a unidirectional bezel with a dual scale for depth and dive time to calculate a safe ascent without decompression stops

The black leather strap reveals an orange interior

the Speedmaster collection boasts Omega's most iconic timepieces

as well as a red seconds hand

Taking design inspiration from the original Seamaster 300 released in 1957

Submariner Date Tank it was the first toThe Rolex Certified Pre Owned Submariner Date is presented in a 40mm Oystersteel case with a black dial. The black unidirectionalrotating bezel graduated for 60 minutes ensures precise timing at a glance. Worn on an Oyster bracelet, it is driven by the automatic Calibre 3135.