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Swiss diving watch Formex Reef 39,5 Automatic Chronometer Forged Carbon 2201.1.6399.100 impresses at first sight with its bezel and the unique forged carbon dial, which gives each piece a completely original look. The characteristic case with clean lines then underlines the modern, versatile and technically advanced character of the entire Reef collection.
Carbon brings a new visual experience to the Reef collection. Each dial and bezel insert has, thanks to the manufacturing process, a unique structure and pattern. Short carbon fibres are pressed under pressure and heat into a composite, creating a surface with natural depth and variability. When light hits it, the dial resembles the movement of the water surface, subtle, smooth and constantly changing.
The basis of the dial is a galvanically blackened brass base, which ensures visual cleanliness and undisturbed depth of the carbon structure. The demanding process is also connected with the production of the bezel. Its markings are created by a femtosecond laser, which removes material without generating heat that could damage or alter the composite; the carbon is thus essentially evaporated. The resulting cavities are then hand-filled with a luminescent layer, which is then also cured.
The steel case of the Formex Baby Reef 39,5 Automatic Chronometer watch combines striking brushed and polished surfaces and, despite the robust-looking construction, retains a comfortable height of only 11 mm. The case is dominated by a unidirectional rotating bezel with a forged carbon insert.
The case is complemented by a steel strap finished with a folding buckle with fine micro-adjustment and the possibility of length adjustment up to 10 mm. The strap is equipped with a quick-release system and its replacement is therefore very easy even without the use of tools.
The watch is powered by the Sellita SW300-1 automatic mechanical movement with COSC certification (Chronometer Grade) and a power reserve of around 56 hours. The movement with a frequency of 28,800 vibrations per hour offers the option of winding by crown, a seconds stop function when setting the time (hacking) and a date at the 6 o'clock position.
The watch’s 300 m (30 ATM) water resistance is supported by a screw-down crown and case back, making the watch an ideal accessory for all water activities.
The case diameter is 39,5 mm, so the watch fits most men’s wrists very well and may also be suitable for women looking for a larger sports model.
The classic distinguishing features of the Formex Baby Reef watch include a bold and highly legible dial, higher water resistance, a buckle with fine micro-adjustment and the option of easy bezel replacement. The clear dial is protected by a sapphire crystal with internal anti-reflective coating and high scratch resistance. Better legibility in poorer light conditions is ensured by luminescence (BGW9 Super-LumiNova) placed on the hands and indices. The dial from Formex pleases, in addition to the special material, also with hand-applied triangular indices, sloping from the edges towards the centre of the dial. The overall impression is underlined by the sensitively designed date display at the 6 o'clock position.
You will appreciate the watch primarily for its versatility; with its set of features it is intended for use in sport, in water, but also for everyday use.
It is possible to purchase an additional silicone, nylon, or leather strap finished with a carbon folding buckle with an innovative fine micro-adjustment system in a range of 7 mm, where the length adjustment can be easily made by pressing the side button without the need to take the watch off the wrist.
Similarly, the character of the watch can be changed by purchasing one of the available interchangeable bezels. 3 bezels are fitted with a ceramic insert and one is entirely steel.
You can also find the watch under the designation Formex 2201.1.6399.100
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| Brand | Formex |
| Gender | Male, Female, Unisex |
| Style | Dive, Sports |
| Origin | Swiss |
| Guarantee | 5 years |
| Waterproof | 300 m |
| Weight | 165 g |
| Movement | Automatic |
| Caliber | Sellita SW300-1 COSC |
| Movement accuracy in seconds | -4/+6 sec. / day |
Power Reserve ![]() |
56 hodin |
| Case size | 39,5 mm |
Lug-to-lug: ![]() |
45,5 mm |
| Case height | 11 mm |
| Case shape | Round |
| Case material | Stainless steel |
| Case color | Silver |
| Crystal material | Sapphire - anti-reflective |
| Dial | Analog |
| Dial color | Black |
Threaded lid ![]() |
Yes |
| Strap material | Stainless steel |
Buckle ![]() |
Push Button Deployant Clasp |
| Strap Width | 22 mm |
| Strap color | Silver |
Quick release system ![]() |
yes |
| Date | Yes |
Rotating bezel ![]() |
Unidirectional rotating |
| Functions | Date, Screw-on crown, COSC |
Luminescence ![]() |
SuperLuminova BGW9 hands and indexes |
| Other functions | 25 jewels, 28.800 oscillations / hour, Chronometre |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 8 EUR on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo 9-19
We-Th 9-19
Fr-Sa 9-16
info@helveti.eu
The product is included in categories
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Formex Watches is an independent Swiss watch manufacturer based in Biel-Bienne, the cradle of Swiss watchmaking, where the entire production process takes place from design, development, assembly and testing of all watches. The company was founded in 1999 with the aim of producing watches that will meet the highest quality standards. The brand is known for the use of high-tech materials and the development of unique improvements and functions, leading to the technical perfection of the watch and an increase in wearing comfort - for all of them, let's name the Case Suspension System, a patented suspension system of the case, protecting the movement of the watch during impacts and increasing comfort on the wrist.
The Formex brand was founded by two brothers, watchmakers and watch enthusiasts who wanted to combine their passion for watches with their love of motorsport. High resistance is therefore typical for the design of the watch, suitable even for extreme conditions. It is aimed not only at watch lovers, but also at all athletes, outdoor enthusiasts and adventurers who require functionality and high reliability.
Formex is a combination of the French words "forme" and "extrème", loosely translated as extreme form/shape. All watches assembled at the brand's headquarters in Biel-Bienne meet the strictest requirements of the Swiss Made label. Every single piece goes through careful quality control and testing. Formex watches reflect love for watchmaking, high quality workmanship, innovative approach, relentless development, use of special materials and exceptional craftsmanship.
Helveti.eu is an authorized retailer, specialist and certified expert of the Formex brand.
Series: Essence Essence Leggera Field Automatic Reef
Manufacturer information: Formex, Chemin du Long-Champ 95F, 2504 Biel, Switzerland / info@formexwatch.com
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1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: