Side by side

Formex Reef GMTvsLongines LONGINES AVIGATION BIGEYE

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

Reef GMT
FormexReef GMT
MSRP $2,235
LONGINES AVIGATION BIGEYE
LonginesLONGINES AVIGATION BIGEYE
MSRP $4,400

At a glance

11 of 29 specs differ
Diameter
Reef GMT42mm
LONGINES AVIGATION BIGEYE41mm
Power Reserve
Reef GMT56h
LONGINES AVIGATION BIGEYE40h
Water Resistance
Reef GMT300m
LONGINES AVIGATION BIGEYE30m
MSRP
Reef GMT$2,235
LONGINES AVIGATION BIGEYE$4,400

Full specifications

Case

6 specs
Category
GMT
Chronograph
Diameter
42mm
41mm
Thickness
11.4mm
14.5mm
Lug-to-Lug
47mm
48.7mm
Lug Width
22mm
20mm
Water Resistance
300m
30m

Crystal & Dial

2 specs
Dial Color
Black
Blue
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW330-2
L688.5
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,235
$4,400

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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.

Formex Reef GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

LONGINES AVIGATION BIGEYE

Owners and reviewers widely praise the Longines Avigation Bigeye for its unique, asymmetric dial, vintage military aesthetic, and cohesive design, with one reviewer noting its GPHG Best Revival prize win. The tactile chronograph pusher action and reliable L688.2 column wheel movement are highlighted, as is the watch's legibility and versatile strap-swapping potential due to its 20mm lug width. However, criticisms include the 30-minute sub-dial's three-minute hash marks, which some find compromise reading speed, and the lack of drilled lugs. The watch's thickness, around 14.45mm, is noted as typical for its movement, and some owners mention minor QC issues with chronograph hand alignment and a loud rotor. On balance, owners and reviewers rate the Longines Avigation Bigeye highly for its distinctive vintage-inspired design and solid chronograph performance at its price point.

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