Doxa Watch SUB 600T Professional Nato 861.10.351.21.N. DOXA is doing more than just revisiting a chapter written long ago. We are paying tribute to the iconic SUB 600T with a new history that begins now. After the massive success of the limited titanium edition SUB 600T Pacific Blue this summer, DOXA is bringing out the SUB 600T in a non-limited edition to complete the DOXA SUB line-up. The reborn SUB 600T comes in stainless steel with the choice of a steel or black ceramic bezel insert, 7 vibrant colors and either a stainless-steel bracelet or an FKM rubber strap to match the dial color