Case

Case Size: 40 mm

Case Material: Oystersteel (904L stainless steel)

Case Thickness: ~11.9 mm

Water Resistance: 100 meters / 330 feet

Crown: Screw-down crown with Triplock triple waterproofness system

Pushers: Screw-down chronograph pushers

Caseback: Solid, screw-down

Bezel

Type: Fixed tachymeter bezel (NOT rotatable)

Material: Black Cerachrom ceramic bezel

Scale: Engraved tachymetric scale with platinum-coated numerals

Crystal

Scratch-resistant sapphire

No Cyclops lens (no date function)

Movement

Calibre: Rolex 4131 

Type: Self-winding mechanical chronograph

Frequency: 28,800 vph (4 Hz)

Jewels: 47

Power Reserve: ~72 hours

Functions:

Hours, minutes, small seconds

Central chronograph seconds hand

30-minute counter (3 o’clock)

12-hour counter (9 o’clock)

No GMT, no date

Oscillator / Balance

Blue Parachrom hairspring

Chronergy escapement

High-performance Paraflex shock absorbers

Dial

Color options: Black or white (Panda)

Subdials: Contrasting chronograph counters

Hour markers: 18 ct white gold with Chromalight (blue glow)

Hands:

Baton-style (not Mercedes)

Luminous hour & minute hands

Central chronograph seconds hand

Bracelet

Type: Oyster bracelet (3-link only — no Jubilee option)

Material: Oystersteel

Clasp: Oysterlock folding safety clasp

Extension: Easylink 5 mm comfort extension

Certification

Superlative Chronometer (COSC + Rolex casing standard)

Accuracy: −2 / +2 seconds per day

5-year international warranty