Which is cheaper, the Bremont Altitude 39 Date or the Formex Reef GMT?

At MSRP the Formex Reef GMT is the cheaper of the two at $2,235, against $4,250 for the Bremont Altitude 39 Date — a $2,015 gap before any retailer discounting.

Which is bigger, the Bremont Altitude 39 Date or the Formex Reef GMT?

The Formex Reef GMT wears larger at 42mm versus 39mm for the Bremont Altitude 39 Date — a 3mm difference across the dial.

Which has better water resistance, the Bremont Altitude 39 Date or the Formex Reef GMT?

The Formex Reef GMT is rated to 300m versus 100m for the Bremont Altitude 39 Date.

Which has a longer power reserve, the Bremont Altitude 39 Date or the Formex Reef GMT?

The Formex Reef GMT carries a 56-hour power reserve against 40 hours on the Bremont Altitude 39 Date.

What movement does the Bremont Altitude 39 Date run compared to the Formex Reef GMT?

Both watches run automatic movements — the Bremont Altitude 39 Date uses the BE-92AE and the Formex Reef GMT uses the Sellita SW330-2.

Side by side

Bremont Altitude 39 DatevsFormex Reef GMT

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

Bremont Altitude 39 Date

alt39-dt-ss-si-l-s

MSRP $4,250

Formex Reef GMT

reef-gmt-42mm-automatic-cosc-300m-black-blue

MSRP $2,235

At a glance

12 of 29 specs differ

Diameter

Altitude 39 Date39mm

Reef GMT42mm

Power Reserve

Altitude 39 Date40h

Reef GMT56h

Water Resistance

Altitude 39 Date100m

Reef GMT300m

MSRP

Altitude 39 Date$4,250

Reef GMT$2,235

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Dial Color

Silver

Black

Lume

None

Super-LumiNova

Movement

2 specs

Caliber

BE-92AE

Sellita SW330-2

Power Reserve

40h

56h

Pricing

1 specs

MSRP

$4,250

$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.

Bremont Altitude 39 Date

Owners and reviewers widely praise the Bremont Altitude 39 Date as a sleek, legible, and everyday-suited pilot's watch, noting its comfortable 39mm 904L steel case and clean dial design. The La Joux-Perret G100 movement is recognized for its 68-hour power reserve and smooth winding feel. Some owners note the bracelet lacks micro-adjustments. On balance, the consensus is that the Bremont Altitude 39 Date is highly regarded for its refined finishing and wearability at 39mm.

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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