Zenith Chronomaster Sport El Primero 3600 41mm

Ref. 03.3100.3600/69.M3100

The El Primero movement has been at the centre of Zenith's identity since 1969, when the brand became one of the first to put a self-winding column-wheel chronograph into production. The 3600 calibre carries that lineage forward with a specific purpose: running at 36,000 vibrations per hour so the central chronograph hand sweeps a full rotation every ten seconds, giving genuine 1/10th-of-a-second resolution rather than the interpolated kind. That capability is marked directly on the black ceramic bezel, whose graduation scale is graduated accordingly. The tri-colour sub-dial arrangement — grey and blue counters against matte white — is the visual shorthand Zenith has used to identify its serious chronographs for decades, and on the Sport it reads with enough contrast to be useful in poor light without becoming busy at a glance. At 13.6mm the case is not thin, but it wears honestly for what it contains: 311 parts, a column wheel, and a sapphire caseback worth actually using.

Reference

03.3100.3600/69.M3100

Brand

Zenith

Case size

41mm

Case thickness

13.6mm

Case material

Stainless steel

Case shape

Round

Dial

White

Crystal

Sapphire

Movement

Automatic

Calibre

El Primero 3600

Functions

Chronograph, Date, Small seconds

Water resistance

100m

Bracelet / strap

Stainless steel bracelet

Strap colour

Silver

Clasp

Deployant clasp

Lume

Super-LumiNova

Retailer

Goldsmiths