Automatic COSC 300M Radiant Bronze 39.5 mm

Automatic COSC 300M Radiant Bronze 39.5 mm

CHF2,065.00

NEW interchangeable bezels All REEF watches now come with a one of its kind bezel mounting system that allows to pull out the bezel from the case by hand and exchange it with another color. Click here to see the selection:

We will custom make your order, therefore please allow up to 5 days for us to assemble, test, control, pack and ship your watch. The 30-day free return policy will start once you have received your new watch.

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SKU:
2201.1.6382.100

  • About this watch

    This special edition of the Reef features a vertically brushed real bronze dial that transforms as it reflects light. A unique lacquer on the dial base prevents natural oxidation, ensuring the dial maintains its radiant glow over time. It includes all the beloved features of the Reef, such as proprietary systems for changing straps and bezels effortlessly, without any tools, in seconds.

    A true diver’s watch by design, this 39.5mm stainless steel timepiece is powered by a self-winding COSC-certified SW300 movement, crafted to Sellita’s highest quality standards with top-tier components exclusive to chronometer-grade movements. This slim, high-precision caliber allows the Reef to be constructed at just 11mm thickness, making it suitable for elegant occasions as well. For underwater activities, a double gasket construction ensures water resistance up to 300 meters (1000 feet).

    Both the solid-link bracelet and rubber strap feature a patented fine-adjustment system and a completely re-engineered, patented quick-release system.

  • Features

    Swiss Made Automatic Movement
    Unidirectional Rotating Bezel
    Screw-Down Crown
    Sapphire Crystal
    Anti-Reflective (AR) Coating
    BRACELET
    BRACELET
    CASE
    DIAL
    MOVEMENT
    MOVEMENT
    MOVEMENT
    PRE-ORDER
    HIDE_FIELDS
    INFLUENCER-HEADING
    INFLUENCER-SUBTEXT
    PDP-CUSTOMIZER-HEADING
    PDP-CUSTOMIZER-SUBTEXT
    Chronometer
    Water Resistance 30 Bar
    Patented Micro-Adjustment System
    Tool-Free Change of Straps/Bracelet

         3-Year Guarantee

    We back our watches with a 3-Year international warranty. In the rare case of a malfunction or a movement defect, you can contact us and send your watch back free of charge and we’ll repair it for you within 2 weeks.

         Secure Payment

    Formex is dedicated to online payment security. We do not store any of your payment information. We offer payment solutions tailored to your shipping destination. Please proceed to checkout to view your local payment options.

        All Taxes & Duties Included

    The courier dropping off your Formex will not hand you a customs and sales tax bill nor ask you to pay them cash, as we have already taken care of that with our shipping partners. The prices you see on our Online Shop is the price you pay – no exceptions and no hidden charges.

         Free Express Delivery

    All watch prices already include free shipping worldwide. As soon as we have processed your order, you will receive a tracking number to follow your package. Expect your watch within 2 business days within Europe, or within 3 business days for overseas orders. If for any reason you think it’s not the right fit, you can return your watch free of charge. If you contact us before returning or exchanging your watch, we’ll even have your shipping expenses covered.

         Swiss Made

    All our watches are designed, developed and assembled in-house at our headquarters in Biel-Bienne, Switzerland and meet the current, more strict Swiss Made requirement, which entered into force on January 2017. Every single piece undergoes a variety of quality and functionality controls, before making it to your wrist.

About this watch

This special edition of the Reef features a vertically brushed real bronze dial that transforms as it reflects light. A unique lacquer on the dial base prevents natural oxidation, ensuring the dial maintains its radiant glow over time. It includes all the beloved features of the Reef, such as proprietary systems for changing straps and bezels effortlessly, without any tools, in seconds.

A true diver’s watch by design, this 39.5mm stainless steel timepiece is powered by a self-winding COSC-certified SW300 movement, crafted to Sellita’s highest quality standards with top-tier components exclusive to chronometer-grade movements. This slim, high-precision caliber allows the Reef to be constructed at just 11mm thickness, making it suitable for elegant occasions as well. For underwater activities, a double gasket construction ensures water resistance up to 300 meters (1000 feet).

Both the solid-link bracelet and rubber strap feature a patented fine-adjustment system and a completely re-engineered, patented quick-release system.

Features

Swiss Made Automatic Movement
Unidirectional Rotating Bezel
Screw-Down Crown
Sapphire Crystal
Anti-Reflective (AR) Coating
BRACELET
BRACELET
CASE
DIAL
MOVEMENT
MOVEMENT
MOVEMENT
PRE-ORDER
HIDE_FIELDS
INFLUENCER-HEADING
INFLUENCER-SUBTEXT
PDP-CUSTOMIZER-HEADING
PDP-CUSTOMIZER-SUBTEXT
Chronometer
Water Resistance 30 Bar
Patented Micro-Adjustment System
Tool-Free Change of Straps/Bracelet

  3-Year Guarantee

We back our watches with a 3-Year international warranty. In the rare case of a malfunction or a movement defect, you can contact us and send your watch back free of charge and we’ll repair it for you within 2 weeks.

   Secure Payment

Formex is dedicated to online payment security. We do not store any of your payment information. We offer payment solutions tailored to your shipping destination. Please proceed to checkout to view your local payment options.

   All Taxes & Duties Included

The courier dropping off your Formex will not hand you a customs and sales tax bill nor ask you to pay them cash, as we have already taken care of that with our shipping partners. The prices you see on our Online Shop is the price you pay – no exceptions and no hidden charges.

   Free Express Delivery

All watch prices already include free shipping worldwide. As soon as we have processed your order, you will receive a tracking number to follow your package. Expect your watch within 2 business days within Europe, or within 3 business days for overseas orders. If for any reason you think it’s not the right fit, you can return your watch free of charge. If you contact us before returning or exchanging your watch, we’ll even have your shipping expenses covered.

   Swiss Made

All our watches are designed, developed and assembled in-house at our headquarters in Biel-Bienne, Switzerland and meet the current, more strict Swiss Made requirement, which entered into force on January 2017. Every single piece undergoes a variety of quality and functionality controls, before making it to your wrist.



Unidirectional rotatable Ceramic bezel

Being one of the most exposed parts, the unidirectional rotatable bezel is made of an extremely hard and scratch-resistant Zirconium oxide ceramic. The graduations and numbers are engraved by femto-laser pulsations. Each bezel takes 60 minutes of precision engraving to achieve its three-dimensional effect. Machined gear-like indentations on the bezel’s edge allow a diver the ideal grip to safely set and monitor diving time and decompression stops. The 120 click action is responsive and smooth, yet offers firm and precise function of the bezel. Besides that, the bezel can be changed without the use of any tools.

officially certified movement

The Reef 39.5mm is powered by a Swiss Made Sellita SW300-1 self-winding movement with a power reserve of 56 hours. We've chosen its highest quality grade "Chronometer" because it comes with premium components such as a Glucydur balance wheel which is exceptionally hard and stable, very resistant to deformation, non-magnetic, and non-corrosive. Another reason why we've purposely chosen this thin movement is because it allowed to construct the Reef at just 11.0mm overall height. The movement is completely decorated and wound by Formex’s in-house developed and custom built skeletonized rotor. Each one of these movements is certified by the COSC (the official Swiss Chronometer Testing Institute) and undergoes the meticulous 15-day rate test to ensure extraordinary levels of mechanical accuracy and precision. Each certified chronometer is unique, identified by a number engraved on its movement and a certificate number issued by the COSC. While less than 3% of Swiss watch movements are officially certified, Formex further rate test them per the same criteria after assembly, to measure if there is any deviation from the certification rates.

fine adjustment clasp

Besides contributing to visual appeal, the details on the REEF also serve a purpose. For a timepiece to be a watch for all occasions, it needs to feel exceptionally comfortable on the wrist. For even more wrist comfort, Formex added their patented Carbon Fiber Composite Folding Clasp that allows for fine-adjustment of the strap length on the go, allowing for a perfect fit on the wrist in all conditions and temperatures. The strap can be changed without the use of any tools with Formex's patented quick release system. The stainless steel bracelet with screwed links has the same quick release system and also features a unique fine-adjustment system.

a unique radiant bronze dial

While bronze has often been used as a case material, it’s rarely found in dials. In fact, the development of the watch’s dial is the result of months of experimentation and prototyping at Formex’s dial production facility in the Swiss Jura mountains. The result: A rich, glowing dial the changes character as it reflects light. To prevent oxidation, the dial is treated with a proprietary lacquer to ensuring it retains its original coloration. The REEF’s bold rehaut-style hour markers are also hand-applied and triangle shaped, pointing towards the broad hour and minute hands that share the same detailed beveled mirror polish and brushed top surface finishing. 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. Being able to read the time with absolute certainty is a matter of survival when diving.

TECHNICAL SPECIFICATION

  • MOVEMENT

    Swiss Made Sellita SW300-1 (self-winding) Automatic (Chronometer grade), officially certified by COSC. 25 jewels. Date display. Custom-built skeleton rotor with thermally blued screws. 56 hours power reserve.

    CASE

    Diameter: 39.5mm
    Height: 11.0mm
    Lug width: 22mm
    Lug-to-lug: 45.5mm
    Water resistance: 30 bar (300 metres / 1000 feet)
    Weight: 75g (case only)

    MATERIAL

    Bezel: Unidirectional rotating Zirconium Oxide Ceramic bezel (blue, black, green) / Stainless steel for the steel bezel
    Case: Stainless steel 316L
    Glass: Sapphire crystal with anti-reflection treatment

  • STRAP

    Black rubber strap with curved spring bars, Quick Release function and carbon fiber composite deployant clasp with patented Micro-Adjustment System. Stainless steel bracelet with screwed links, Quick Release function and stainless steel buckle with patented Micro-Adjustment System

    DIAL

    Multi-finished & vertically brushed bronze dial. BGW9 Super-LumiNova on hands and indexes.

FINE-ADJUSTMENT DEPLOYANT CARBON CLASP

Your rubber strap comes on our new deployant clasp with a patented fine-adjustment. More intuitive to operate, the new version is fully made out of our proprietary carbon fiber composite. The micro-adjustment is now even easier to use and can be operated while the watch is on your wrist. Lightweight, smooth to the touch, ultra-durable and highly functional, this clasp is a real piece of engineering, making your REEF even more comfortable to wear.

VARIATIONS