Side by side

Longines ULTRA-CHRON CLASSICvsYema Granvelle CMM.29

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

ULTRA-CHRON CLASSIC
LonginesULTRA-CHRON CLASSIC
MSRP $4,000
Granvelle CMM.29
YemaGranvelle CMM.29
MSRP $1,913

At a glance

22 of 29 specs differ
Diameter
ULTRA-CHRON CLASSIC40mm
Granvelle CMM.2939mm
Power Reserve
ULTRA-CHRON CLASSIC72h
Granvelle CMM.2940h
Water Resistance
ULTRA-CHRON CLASSIC30m
Granvelle CMM.2950m
MSRP
ULTRA-CHRON CLASSIC$4,000
Granvelle CMM.29$1,913

Full specifications

Case

9 specs
Category
Dress
Diameter
40mm
39mm
Thickness
10.95mm
8.6mm
Lug-to-Lug
47.2mm
Lug Width
21mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
50m
Caseback
Transparent case back with sapphire crystal
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Both sides
Inner
Dial Color
Silver
Black
Indices
Applied indexes
Applied
Lume
Super-LumiNova
None

Movement

7 specs
Caliber
L836.6
Yema CMM.29
Beat Rate
25,200 vph
28,800 vph
Power Reserve
72h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes
Complications
Hours, minutes, seconds, moon phase display and date indicated by small hand at
None

Pricing

1 specs
MSRP
$4,000
$1,913

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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 CLASSIC

The Longines ULTRA-CHRON CLASSIC is widely praised for its high-beat 5Hz movement, offering superior accuracy and a smooth seconds hand, with reviewers noting its TIMELAB certification for chronometer standards. Owners and reviewers alike commend its faithful retro design, capturing beloved 1960s details with modern relevance and a charming appearance. The bracelet is described as comfortable and refined, featuring a micro-adjustment clasp, and the sunray silver dial with sparkling indices is a notable strength. Some owners, however, find the 11mm thickness detracts from a vintage feel, and there is a desire for a no-date version. The 40mm case wears larger than expected, with many suggesting the 37mm version offers superior wearability and fit for most wrists, and its 50m water resistance is considered not exceptional. Overall, owners and reviewers rate the Longines ULTRA-CHRON CLASSIC highly for its accurate high-frequency movement and successful retro design at its price point.

From video reviewers

The watch's high-beat movement, certified by TimeLab Geneva as an Ultra-Chronometer, is a notable feature. The relatively high price compared to its competitors is a drawback. Reviewers disagree on the optimal case size, with one reviewer mentioning 41mm and 43mm, and the other mentioning 37mm and 40mm.

Yema Granvelle CMM.29

Owners praise the Yema Granvelle CMM.29's gorgeous dial, noting its guilloché pattern and carved hour indices that catch the light. One owner describes the movement as a "feast for the eyes" but finds the watch frustrating at work due to its lack of a specific function. On balance, owners appreciate the Yema Granvelle CMM.29 for its visually striking dial and movement finishing, with some finding its utility limited in certain professional contexts.

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