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Formex Baby Reef 39.5 mm

Formex finally released a more compact, smaller version of their popular 300-meter water resistant Reef diver’s collection–or short, the “Baby” Reef.

With its tool-free exchangeable bezels and straps, the Reef stands out as one of the market’s most versatile mechanical dive watches. Encased within a meticulously hand-finished 39.5mm stainless steel case is the heart of precision-a Chronometer-grade,officially certified Sellita SW300-1 Automatic movement, offering 56hours of power reserve. Unique gradual fine-adjustment systems across all strap-and bracelet options noticeably increase wearing comfort on the wrist throughout the day.

More versatile a wearable

The 39.5mm stainless-steel case with its distinctive shape provides both a functional guard for the screwdown crown and a visual symmetry alike. Originally designed as a 42mm dive watch, the smaller diameter also means a shorter, more wearable lug-to-lug distance of 45.5mm and a height of just 11mm.

A double gasket construction is tested for 300 m / 1000 ft of water resistance. Mirror-polished bevels and brushed surfaces throughout the watch case, bracelet and down to the hands and triangle-shaped indices create a unique balance between elegance and the brand’s high-octane spirit.

The four available dials are manufactured in Formex’s in-house dial manufacture in the Swiss Jura mountains. The blue, green and silver dials are finished with a sunburst effect and a hand-applied color gradient. As for the white dial, the initial application of white lacquer on a mirror-polished surface is followed by the layering of seven coats of transparent lacquer, which are subsequently polished down to achieve a uniquely deep aspect of this dial.

To further create visual depth without increasing overall height, the hand-applied indices are triangleshaped and imitate a chapter ring. To increase legibility and to reflect the case finishing, the indices as well as the broad hour and minute hands are vertically brushed, while the bevels are mirror polished.

The date window is angled on both sides to increase legibility of the color-adjusted date. Hands and hour markers as well as a capsule on the bezel’s zero marker are deep filled with Swiss Super-LumiNova® BGW9 that emits a long-lasting blue glow in dark conditions.

COSC-certified Automatic movement

Powering the hands is a self-winding Swiss Made SW300-1 with date that comes in Sellita’s highest quality grade “Chronometer”, using top of the line components only found in Chronometer-grade movements.

Formex purposely chose this thin movement as it allowed to construct the REEF at just 11mm thickness and a perceived height of 10.5mm (the height that is visible when wearing on the wrist).

Each of the movements undergoes the COSC-certification process, a meticulous 15-day rate test to ensure extraordinary levels of mechanical accuracy and precision. Only the movements who pass the stringent assessment will be certified and engraved with a unique serial number. The movements’ power reserve extends to 56 hours.


The “Baby” Reef 39.5mm Automatic Chronometer 300M can be configured on the Formex Online
Boutique with 4 dial, 4 bezel and 7 bracelet/strap options.

In the US, the collection is now in stock an available starting at $1,670.00 on the Formex Online Boutique and at selected Trusted Retailers.

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