Case

Case Size: 40 mm diameter

Case Material: Oystersteel (904L stainless steel)

Case Thickness: Approximately 11.6 mm

Water Resistance: 100 meters / 330 feet

Crown: Screw-down Twinlock winding crown

Crown Guards: Yes

Caseback: Solid screw-down caseback

Bezel

Type: Smooth fixed bezel

Material: Oystersteel

Insert: None

Crystal

Scratch-resistant sapphire crystal

No Cyclops lens

No date window

Movement

Calibre: Rolex Calibre 3230

Type: Self-winding mechanical movement with Perpetual rotor

Frequency: 28,800 vibrations per hour (4 Hz)

Jewels: 31

Power Reserve: Approximately 70 hours

Functions

Hours

Minutes

Seconds

Stop-seconds for precise time setting

(No GMT function and no date.)

Oscillator / Balance

Hairspring: Blue Parachrom hairspring

Escapement: Chronergy escapement

Balance Wheel: Variable inertia balance wheel with Microstella regulation

Shock Protection: Paraflex shock absorbers

Dial

Color: Black dial

Design:

Prominent minute scale for navigational readability

Large “3”, “6”, and “9” numerals

Distinctive green seconds hand

Yellow Rolex crown logo

Hour Markers:

Applied Chromalight luminous markers

Blue luminescence

Hands

Mercedes-style hour hand

Sword-style minute hand

Green central seconds hand

Bracelet

Bracelet Type: Oyster bracelet (three-link)

Material: Oystersteel

Clasp: Oysterlock folding safety clasp

Extension System: Easylink 5 mm comfort extension link

Certification

Superlative Chronometer certification

COSC-certified movement plus Rolex post-casing testing

Accuracy: −2 / +2 seconds per day

Rolex International Warranty: 5 years