Side by side

Nivada Grenchen F77 MK2 41mm AutomaticvsSeestern S450 Ocean Star

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

F77 MK2 41mm Automatic
Nivada GrenchenF77 MK2 41mm Automatic
MSRP $1,460
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

16 of 29 specs differ
Diameter
F77 MK2 41mm Automatic41mm
S450 Ocean Star40mm
Power Reserve
F77 MK2 41mm Automatic38h
S450 Ocean Star41h
Water Resistance
F77 MK2 41mm Automatic100m
S450 Ocean Star100m
MSRP
F77 MK2 41mm Automatic$1,460
S450 Ocean Star$299

Full specifications

Case

7 specs
Category
Sport
Diver
Diameter
41mm
40mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.2mm
48mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Caseback
316L Steel Caseback
Solid

Crystal & Dial

3 specs
AR Coating
Underside
Inner
Dial Color
Meteorite
White
Lume
Super-LumiNova
Tritium

Movement

5 specs
Caliber
Soprod M100
TMI NH35A
Beat Rate
28 vph
21,600 vph
Power Reserve
38h
41h
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,460
$299

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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.

Nivada Grenchen F77 MK2 41mm Automatic

The Nivada Grenchen F77 MK2 41mm Automatic is praised for its comfortable wearability, with reviewers highlighting its reworked integrated lug design and slim case profile. The "carbon effect" basketweave dial is frequently cited as a modern, distinctive touch on the retro design. The watch is powered by the Soprod P024 automatic movement, which has a 38-hour power reserve. Some find the gold-plated version loud, and the dauphine hands lack lume. The stainless steel model is priced at $1,460 to $1,560 USD. On balance, reviewers consider the Nivada Grenchen F77 MK2 41mm Automatic a strong integrated bracelet option at its price point, lauded for its unique design and comfortable fit.

Seestern S450 Ocean Star

Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.

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