Watch Almanac
Christopher Ward

C1 Jump Hour Mk V

Ref. C01-39AJH4-S00B0-B1

Case diameter
39 mm
Manufacturer spec
Lug-to-lug
47.3 mm
Manufacturer spec
Thickness
14 mm
Manufacturer spec
Lug width
—
Not published

Retail price $3,295 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 47.3 mm

How the C1 Jump Hour Mk V wears

Its lugs add 8.3 mm to the 39 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.75" to 8" (17.1–20.3 cm); below 6.75" the lugs start to reach the edge of the wrist.

At 14 mm thick it is thicker than 99% of the 147 other dress watches we've measured, so expect it to sit tall on the wrist.

Will the C1 Jump Hour Mk V fit your wrist?

With a 47.3 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmLugs overhang
6.5"51.2 mmSnug, lugs near the edge
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmIdeal fit

Specifications

Reference
C01-39AJH4-S00B0-B1
Collection
C1
Status
In production
Case material
stainless steel
Crystal
sapphire (box-domed)
Water resistance
30 m
Dial
Noon (silver/white multi-tier with sapphire ring)
Strap / bracelet
Consort stainless steel bracelet, butterfly clasp, quick release
Weight
139 g
Style
Dress

Movement

Caliber
Christopher Ward JJ01
Type
automatic
Power reserve
38 hours
Frequency
28,800 vph (4 Hz)
Jewels
26
Accuracy
-5/+12 s/day (Christopher Ward tolerance)

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Sources