Case

Shape

Round

Diameter (in mm)

42

Water Resistance

50 m

Bezel

Stainless Steel

Material

Stainless Steel

Model Case

Stainless steel, Stainless steel case back with Greenwich Observatory engraved and sapphire aperture on the balance wheel

Crystal

Domed sapphire crystal, anti-reflective coating on both faces

Winding Crown

Stainless steel fast-action start/stop trigger and reset pusher

Dial

Indexes

Arabic Numerals

Color

Domed black

Details

Luminescent hour and minute hands, Silver hands, curved chrono hand, Snailed minutes counter

Movement

Jewels

25

Movement

Self-winding mechanical

Functions

Chronograph, Hours, Minutes, Seconds, Date

Winding

Automatic

Power Reserve

48 Hours

Frequency

28,800 VpH (4 Hz)

Caliber

G1745

Oscillator

Incabloc shock absorber

Bracelet

Material

Leather

Bracelet

Brown Leather Strap

Clasp

Deployment