Watch Almanac
Vaer

C5 Korean Field Solar 40mm

Ref. C5-KFS

Case diameter
40 mm
Manufacturer spec
Lug-to-lug
48 mm
Manufacturer spec
Thickness
11.4 mm
Manufacturer spec
Lug width
20 mm
Manufacturer spec

Retail price $319 (US, Oct 2026)

Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 48 mm

How the C5 Korean Field Solar 40mm wears

Its lugs add 8 mm to the 40 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 11.4 mm thick it is slimmer than 69% of the 35 other field watches we've measured, so it slides under a cuff more easily than most.

Its 20 mm lug width is one of the most common strap sizes; 156 other watches here share it, so aftermarket straps are easy to find.

Will the C5 Korean Field Solar 40mm fit your wrist?

With a 48 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
C5-KFS
Collection
C5
Status
In production
Introduced
2023
Case material
316L stainless steel
Crystal
single-domed sapphire, AR coated
Water resistance
100 m
Bezel
fixed
Dial
black
Strap / bracelet
silicone strap plus nylon strap
Style
Field

Movement

Caliber
Epson VS22
Type
solar
Accuracy
-10/+20 s/month (Vaer spec)

Takes 20 mm straps. See other 20 mm watches and straps.

Watches that wear the same size

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

Same 20 mm lug width

All 20 mm watches

These take the same straps as the C5 Korean Field Solar 40mm.

Sources