Rolex Sea-Dweller

Extreme-depth Oyster dive watch introduced 1967 for saturation divers, distinguished from the Submariner by helium escape valve and thicker case.

5 references

Reference	Variant	Years	Dial	Size
1665	Double Red Sea-Dweller (DRSD)	1967–1977	black	40 mm
16660	"Triple Six" / "Great White"	1978–1989	black	40 mm
16600	Not recorded	1989–2014	black	40 mm
116600	Not recorded	2014–2017	black	40 mm
126600	Not recorded	2017	black	43 mm