Side by side

Maen Grand Tonneau Jump HourvsFormex Reef 39.5 mm

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 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

12 of 29 specs differ
Diameter
Grand Tonneau Jump Hour34mm
Reef 39.5 mm39.5mm
Power Reserve
Grand Tonneau Jump Hour40h
Reef 39.5 mm56h
Water Resistance
Grand Tonneau Jump Hour50m
Reef 39.5 mm300m
MSRP
Grand Tonneau Jump Hour$999
Reef 39.5 mm$2,230

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
34mm
39.5mm
Thickness
9.7mm
11mm
Lug-to-Lug
45.5mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

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

Movement

2 specs
Caliber
Sellita SW300-1
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$999
$2,230

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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 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

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