A true Divers’ watch by design, the 42mm stainless steel watch is powered by a self-winding COSC-certified SW300 that comes in Sellita’s highest quality grade, using top of the line components only found in Chronometer-grade movements. This thin high-precision caliber allowed to construct the REEF at just 11.4mm thickness and a perceived height of 9.4mm, making it a great fit for the elegant occasions alike. For any underwater activities, a double gasket construction is designed and tested for 300 m / 1000 ft of water resistance.

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.

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. 

The sunray finished dial is manufactured at Formex’s in-house dial manufacture in the Jura mountains. The gradient for the different colors is sprayed by hand. 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.

Both the solid-link bracelet and the rubber strap feature a buckle with a patented fine-adjustment system as well as a completely re-engineered and patented quick release system that allows to swap straps without the use of any tools.

Movement:  Swiss Made Sellita SW300-1

• Self Winding
• Chronometer Certified by CSOC
• 25 Jewels
• Date
• 42 hour power reserve
  

Case:

• 316L Stainless Steel
• 42mm x 11.4mm
• 47mm lug-to-lug

Water Resistance:  30 bar / 300 meter / 1000 feet

Bezel:

• 120-click unidirectional rotating Zirconium Oxide Ceramic (blue, black, and green) or Stainless Steel
• Brand New!  Interchangeable bezel system

Glass:  Sapphire crystal with anti-reflection treatment

Bracelet/Strap (both not included)

Rubber: 

• Rubber with curved spring bars
• Quick Release funciton
• Carbon fiber composite deployant clasp with patented micro-adjustment system

Bracelet: 

• Stainless Steel with Screwed Links
• Quick Release Function
• Stainless steel buckle with patented micron-adjustment system

Dial:

• Multi-finished & hand-applied Dégradé
• BGW9 Super-Luminova on hands and indexes