In the mid-1970s, reference 7016 was replaced by reference 9401/0, which welcomed a higher-performance movement with the ETA calibre 2776, notably allowing more precise time-setting thanks to a stop seconds function.
The combinations of dials and bezel available for this reference total four in number: blue or black with “snowflakes” hands and hour markers, as well as blue or black with characteristic Submariner hands and triangular and round hour markers. The 1976 example presented here was fitted with a blue dial and square-ended hands.
Two bracelets were offered on this reference: a folding link Rolex Oyster reference 7836/0 with a classic folding clasp and a Rolex Oyster reference 9315/0, which was the same bracelet but with a “Fliplock” folding clasp, an extension link system which meant the length of the bracelet could be adjusted to fit over a diving suit.
The diameter of the watch remained 39 mm and the lines of its case did not change.