Side by side

Sugess Seestern Heritage S436-2 BB GMTvsYema Navygraf Marine Nationale CMM.10

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

Seestern Heritage S436-2 BB GMT
SugessSeestern Heritage S436-2 BB GMT
MSRP $299
Navygraf Marine Nationale CMM.10
YemaNavygraf Marine Nationale CMM.10
MSRP $1,614

At a glance

14 of 29 specs differ
Diameter
Seestern Heritage S436-2 BB GMT40mm
Navygraf Marine Nationale CMM.1039mm
Power Reserve
Seestern Heritage S436-2 BB GMT35h
Navygraf Marine Nationale CMM.1040h
Water Resistance
Seestern Heritage S436-2 BB GMT10m
Navygraf Marine Nationale CMM.10100m
MSRP
Seestern Heritage S436-2 BB GMT$299
Navygraf Marine Nationale CMM.10$1,614

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
40mm
39mm
Thickness
12.2mm
11mm
Lug-to-Lug
48mm
46mm
Lug Width
20mm
19mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
10m
100m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Lume
Tritium
None

Movement

4 specs
Caliber
Seiko NH34
Yema CMM.10
Beat Rate
3 vph
28,800 vph
Power Reserve
35h
40h
Complications
GMT, Moonphase, Date
None

Pricing

1 specs
MSRP
$299
$1,614

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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.

Sugess Seestern Heritage S436-2 BB GMT

Owners widely praise the Sugess Seestern Heritage S436-2 BB GMT for its 39mm sizing, 12mm thinness, and light yet solid feel, with many appreciating its legibility due to the matte dial, clear crystal, and strong lume, though one owner flags the lume as a weak point. The case finishing is considered excellent, and the blue dial and satin finish are favorably compared to alternatives. Some owners report issues with a loose bezel, with others finding it improved after tuning, and one owner notes the seconds hand is too short. The bracelet clasp lacks sufficient micro-adjustment and screw pins are difficult to remove. On balance, owners rate the Sugess Seestern Heritage S436-2 BB GMT highly for its comfortable wearability and attractive finishing at the price.

Yema Navygraf Marine Nationale CMM.10

The Yema Navygraf Marine Nationale CMM.10 is lauded for its vibrant blue dial and bezel, a slimmer 39mm case at 11mm thick, and its in-house CMM.10 caliber offering a 70-hour power reserve. Reviewers highlight the clean, legible dial, blue sapphire bezel insert, and competitive pricing under $2,000. However, the steel bracelet's clasp is noted by multiple sources as rattly and feeling slightly cheap, with one reviewer finding it difficult to open. Accuracy is reported within a range of +5/-3 seconds per day. Overall, reviewers praise the Yema Navygraf Marine Nationale CMM.10 for its attractive design and value proposition, tempered by minor concerns regarding the bracelet clasp.

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