Side by side

Glycine Airman WorldtimervsFormex Reef GMT

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

Airman Worldtimer
GlycineAirman Worldtimer
MSRP $1,395
Reef GMT
FormexReef GMT
MSRP $2,235

At a glance

16 of 29 specs differ
Diameter
Airman Worldtimer42mm
Reef GMT42mm
Power Reserve
Airman Worldtimer
Reef GMT56h
Water Resistance
Airman Worldtimer100m
Reef GMT300m
MSRP
Airman Worldtimer$1,395
Reef GMT$2,235

Full specifications

Case

5 specs
Thickness
14mm
11.4mm
Lug-to-Lug
47mm
Finish
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Indices
Applied
Lume
None
Super-LumiNova

Movement

6 specs
Caliber
RONDA 515
Sellita SW330-2
Type
Quartz
Automatic
Beat Rate
28,800 vph
Power Reserve
56h
Jewels
1
25
Complications
Date, World Time
None

Pricing

1 specs
MSRP
$1,395
$2,235

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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.

Glycine Airman Worldtimer

The Glycine Airman Worldtimer is widely appreciated for its classic pilot watch design and comfortable wearability, with owners specifically praising the 40mm GL1048's size and the 39mm Airman 18's legibility and build quality. The Airman 18's dial lume pips are noted as weaker than its hands, and some owners find the GMT hand on certain models difficult to read due to its thinness and lack of lume. Accuracy is generally acceptable, with one owner reporting no flaws and another noting a Sellita-based movement kept acceptable time. On balance, owners and reviewers rate the Glycine Airman Worldtimer highly for its faithful reproduction of a classic design and excellent value.

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.

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