Waxing crescent

Watch news and tools for
collectors and the curious.

Side by side

The watches side by side

Differs

RolexDay‑Date 40228239
Rolex Day-Date 40
Universal GenèveCompaxUGCO002
Universal Genève Compax

General

Collection (differs)
Day-Date
Not known
Land-Dweller
Status
In production
In production
In production
Introduced (differs)
2015
2026
2025
Retail price
€53,100
US$19,550
€53,000

Case

Shape
Round
Round
Round
Diameter (differs)
40 mm
39.5 mm
40 mm
Thickness (differs)
12 mm
12.45 mm
Not known
Lug to lug
Not known
47.8 mm
Not known
Lug width (differs)
21 mm
19 mm
25 mm
Material (differs)
18k white gold
Stainless steel
Everose gold
Bezel (differs)
Fluted
Tachymeter
Fluted
Bezel material
Not known
Stainless steel
Not known
Bezel insert
Not known
Ceramic
Not known
Caseback (differs)
Screw-down
Display (sapphire)
Screw-down
Crystal (differs)
Sapphire
Sapphire, Domed, Anti-reflective on both sides
Sapphire
Cyclops
Yes
Not known
Yes
Crown (differs)
Screw-down
Push-pull
Screw-down
Water resistance
100 m
100 m
100 m

Movement

Type
Automatic
Automatic
Automatic
Origin
In-house
In-house
In-house
Power reserve (differs)
70 h
72 h
67 h
Frequency (differs)
28,800 vph (4 Hz)
28,800 vph (4 Hz)
36,000 vph (5 Hz)
Jewels (differs)
32
36
39
Certification
Superlative Chronometer
Not known
Superlative Chronometer
Functions (differs)
  • Centre hour, minute and seconds hands
  • Instantaneous day and date in apertures, secure rapid-setting
  • Stop-seconds for exact time setting
  • Hour
  • Minute
  • Second
  • Chronograph
  • Centre hour, minute and seconds hands
  • Instantaneous date with rapid setting
  • Stop-seconds for precise time setting
Complications (differs)
  • Central seconds
  • Date
  • Day
  • Day-date
  • Hacking (stop) seconds
  • Chronograph
  • Central seconds
  • Date
  • Hacking (stop) seconds

Dial

Colour (differs)
White
Black
White
Material (differs)
Brass
Lacquer
Brass
Pattern (differs)
Gradient
Gloss
Not known
Indices (differs)
Roman numerals
Mixed
Mixed
Hands
Baton
Not known
Baton
Lume (differs)
Chromalight
Super-LumiNova
Chromalight

Bracelet

Type
Metal bracelet
Metal bracelet
Metal bracelet
Name (differs)
President
Not known
Flat Jubilee
Material (differs)
18k white gold
Stainless steel
Everose gold
Clasp (differs)
Folding clasp
Butterfly
Folding clasp