Side by side

Seestern S446 GMTvsYema Navygraf Heritage

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

S446 GMT
SeesternS446 GMT
MSRP $299
Navygraf Heritage
YemaNavygraf Heritage
MSRP $990

At a glance

13 of 29 specs differ
Diameter
S446 GMT39.5mm
Navygraf Heritage39mm
Power Reserve
S446 GMT41hh
Navygraf Heritage40h
Water Resistance
S446 GMT100m
Navygraf Heritage100m
MSRP
S446 GMT$299
Navygraf Heritage$990

Full specifications

Case

5 specs
Category
GMT
Diver
Diameter
39.5mm
39mm
Thickness
13mm
10.85mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
19mm

Crystal & Dial

2 specs
Crystal Shape
Domed
Flat
Dial Color
Cream
Black

Movement

5 specs
Caliber
Seiko NH34A GMT
Sellita SW200
Beat Rate
3 vph
28,800 vph
Power Reserve
41hh
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$990

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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.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

Yema Navygraf Heritage

Owners widely praise the Yema Navygraf Heritage for its comfortable 39mm wearability and faithful 1970s reissue design, noting craftsmanship better than expected. Some owners report quality control issues including bezel free play and misalignment, while others find the bezel very tight to turn despite precise 120 clicks. The in-house MBP2000 movement is noted by some to be loud and run approximately +10 to +15 seconds per day. On balance, owners appreciate the Yema Navygraf Heritage for its retro aesthetic and comfortable sizing, with noted concerns around movement accuracy and bezel action.

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