Side by side

Maen Grand Tonneau Jump HourvsFormex Reef GMT

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

Grand Tonneau Jump Hour
MaenGrand Tonneau Jump Hour
MSRP $999
Reef GMT
FormexReef GMT
MSRP $2,235

At a glance

12 of 29 specs differ
Diameter
Grand Tonneau Jump Hour34mm
Reef GMT42mm
Power Reserve
Grand Tonneau Jump Hour40h
Reef GMT56h
Water Resistance
Grand Tonneau Jump Hour50m
Reef GMT300m
MSRP
Grand Tonneau Jump Hour$999
Reef GMT$2,235

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
34mm
42mm
Thickness
9.7mm
11.4mm
Lug-to-Lug
47mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

2 specs
Dial Color
MNL.01
Black
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Sellita SW330-2
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$999
$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.

Maen Grand Tonneau Jump Hour

Owners widely praise the Maen Grand Tonneau Jump Hour for its unique style and accessible price point for a jump hour complication, with one owner finding the red dial variant looks and wears great. However, some find the hour and minute windows, particularly the minute window, too small and the font illegible, impacting legibility. Criticism also centers on the use of a Chinese Seagull movement in a watch priced over $1,000, leading some to label it a "fashion watch" and a "scam," while others note it is selling for significantly over its original price and is not worth it. On balance, owners are split on the Maen Grand Tonneau Jump Hour, with its unique design and value proposition countered by concerns over legibility and movement choice at its price point.

From video reviewers

The watch is praised for its ultra-thin profile and classic design. Reviewers noted the unique jumping hour complication.

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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