Side by side

Longines ULTRA‑CHRON CARBONvsYema Navygraf Pearl CMM.20

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

ULTRA‑CHRON CARBON
LonginesULTRA‑CHRON CARBON
MSRP $5,550
Navygraf Pearl CMM.20
YemaNavygraf Pearl CMM.20
MSRP $1,862

At a glance

22 of 29 specs differ
Diameter
ULTRA‑CHRON CARBON43mm
Navygraf Pearl CMM.2039mm
Power Reserve
ULTRA‑CHRON CARBON52h
Navygraf Pearl CMM.2040h
Water Resistance
ULTRA‑CHRON CARBON300m
Navygraf Pearl CMM.20100m
MSRP
ULTRA‑CHRON CARBON$5,550
Navygraf Pearl CMM.20$1,862

Full specifications

Case

8 specs
Diameter
43mm
39mm
Thickness
14mm
9.75mm
Lug-to-Lug
48.9mm
46mm
Lug Width
22mm
19mm
Material
Titanium
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Screw-down case back
Solid

Crystal & Dial

6 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Both sides
Inner
Dial Color
Silver
Pearl
Indices
Applied indexes
Applied
Lume
Super-LumiNova
None

Movement

7 specs
Caliber
L836.6
Yema CMM.20
Beat Rate
36,000 vph
28,800 vph
Power Reserve
52h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes
Complications
Hours, minutes, seconds
None

Pricing

1 specs
MSRP
$5,550
$1,862

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Longines ULTRA‑CHRON CARBON

The Longines ULTRA‑CHRON CARBON is praised for its lightweight composite case and unique "Batman" aesthetic, with its 5Hz movement widely noted for exceptional accuracy. Owners widely report the high-beat movement is the cheapest 5Hz option available. Some owners find the non-rotating bezel a relief, while others consider it a deal-breaker, noting the watch is no longer a dive watch. On balance, owners and reviewers highly rate the Longines ULTRA‑CHRON CARBON for its cool, lightweight design and the exceptional accuracy of its 5Hz movement.

Yema Navygraf Pearl CMM.20

The Yema Navygraf Pearl CMM.20 is praised for its elegant and slim case design, measuring between 9.5mm and 9.75mm thick, and its unique mother-of-pearl dial and bezel. The watch features functional dive watch elements like 200-meter water resistance and is powered by the in-house CMM.20 micro-rotor movement, which offers a 70-hour power reserve and is adjusted to -3/+7 seconds a day. Overall, reviewers highlight the Yema Navygraf Pearl CMM.20's sophisticated aesthetic and slim profile as its primary strengths.

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