Side by side

Nivada Grenchen F77 MK1vsZelos Spearfish GMT

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

F77 MK1
Nivada GrenchenF77 MK1
MSRP $1,560
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

16 of 29 specs differ
Diameter
F77 MK137mm
Spearfish GMT40mm
Power Reserve
F77 MK138h
Spearfish GMT40h
Water Resistance
F77 MK1100m
Spearfish GMT200m
MSRP
F77 MK1$1,560
Spearfish GMT$999

Full specifications

Case

9 specs
Category
Sport
GMT
Diameter
37mm
40mm
Thickness
12.1mm
13mm
Lug-to-Lug
45mm
40mm
Lug Width
22mm
20mm
Material
Stainless Steel/Titanium/Ceramic
316L Stainless Steel
Finish
Brushed + Polished + Satin
Brushed and polished
Water Resistance
100m
200m
Caseback
Titanium Grade 5
Solid

Crystal & Dial

2 specs
Dial Color
Meteorite Dial, Super Lum. White Dots, Shiny Light Gun Color Applied Indexes
Frost
Lume
x1
None

Movement

4 specs
Caliber
Soprod Newton P092
Sellita SW330-2
Beat Rate
4 vph
28,800 vph
Power Reserve
38h
40h
Complications
GMT
None

Pricing

1 specs
MSRP
$1,560
$999

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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 MK1

Owners widely praise the Nivada Grenchen F77 MK1 for its vintage charm, Genta-inspired design with unique character, and comfortable 37-38mm wearability on average wrists, highlighting its legible basket-weave dial and solid case build with excellent crown grip. The integrated bracelet's connection to the case is noted to increase effective lug-to-lug distance, and one owner criticizes the crown action as stiff and gritty. The Soprod P024 movement provides a 38-hour power reserve. On balance, owners and reviewers find the Nivada Grenchen F77 MK1 a compelling value proposition due to its distinctive dial and overall build quality, despite some reservations about its winding feel and price.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

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