Case

Case Size: 43 mm diameter (not 40 mm)

Case Material: Oystersteel (904L stainless steel)

Case Thickness: ~15 mm

Water Resistance: 1,220 meters / 4,000 feet (not 100 m)

Crown: Screw-down Triplock crown with crown guards

Caseback: Solid, screw-down

Special Feature: Helium escape valve (for saturation diving)

Bezel

Type: Unidirectional rotatable 60-minute graduated bezel

Material: Black Cerachrom ceramic insert

Markings: Platinum-coated numerals and graduations

Crystal

Scratch-resistant sapphire

Cyclops lens over date: Yes (this model reintroduced it on the Sea-Dweller line)

Movement

Calibre: Rolex Calibre 3235

Type: Self-winding mechanical (Perpetual rotor)

Frequency: 28,800 vph (4 Hz)

Jewels: 31

Power Reserve: ~70 hours

Functions:

Hours, minutes, seconds

Instantaneous date at 3 o’clock

Stop-seconds (hacking)

Oscillator / Balance

Blue Parachrom hairspring (paramagnetic)

Chronergy escapement

Variable inertia balance (Microstella)

Paraflex shock absorbers

Dial

Color: Black

Text: “SEA-DWELLER” in red (signature detail)

Hour Markers: Chromalight (blue luminescence), white gold surrounds

Hands:

Mercedes hour hand

Minute hand

Central seconds hand

Bracelet

Type: Oyster bracelet (three-link only — no Jubilee option)

Material: Oystersteel

Clasp: Oysterlock safety clasp

Extension System:

Glidelock diving extension

Fliplock extension link for wetsuit use

Certification

Superlative Chronometer (COSC + Rolex internal testing)

Accuracy: −2 / +2 seconds per day

5-year international warranty