Case

Shape

Round

Diameter (in mm)

44

Material

Black ceramic

Model Case

Polished Black Ceramic,Transparent case-back engraved with individual series number

Winding Crown

Knurled crown

Water Resistance

30 m (3 atm)

Crystal

Scratch resistant sapphire

Bezel

Fixed, polished black ceramic

Dial

Indexes

Arabic Numerals,Roman Numerals

Color

Black

Details

Black almost grey matt "technical" dial,Grande (over-sized) seconds sub-dial with matt grey/silver printed Arabic numeral 10 seconds incremental markings & seconds track,Offset hour & minutes sub-dial located toward the top of the dial with matt grey/silver printed Roman numeral hour markers excluding the number 5, 6 & 7 which are red varnish Arabic numerals,Polished steel hour & minute hands

Movement

Movement

Self-winding mechanical

Frequency

28,800 vph

Winding

Automatic

Jewels

30

Functions

Hours,Minutes,Power reserve indicator,Seconds

Power Reserve

68 Hours

Caliber

Jaquet Droz 4063D-S

Oscillator

Heavy metal oscillating weight with black PVD finish

Bracelet

Material

Black Alligator Leather

Bracelet

Rolled-edge hand-made black alligator leather strap

Clasp

Ceramic folding clasp and stainless steel with PVD finish "Jaquet Droz" engraved in red ceramic