Doxa Watch 1500T Searambler Bracelet 881.10.021.10. True to DOXAs pioneering spirit, the Doxa watches SUB 1500T breaks new ground with a cushion shaped 316L steel case rated to 150 bar, equivalent to 1500m. The SUB 1500T, which comes equipped with the patented unidirectional bezel with diving table and a helium release valve, has a diameter of 45 mm.