

Lugs stay on wrists from about 6.25 in (lug-to-lug rule of thumb)
Last checked Oct 26, 2026
View on Formex’s site ↗@media (max-width:768px){.read-more-zeno{border-bottom:1px solid #dbdbdb;position:absolute;font-weight:700!important;z-index:9;cursor:pointer;font-size:16px!important;color:#363636!important;font-family:Muli,sans-serif!important;text-decoration:none!important;width:100%;background-color:#fff;padding:10px 0!important}.custom-text{overflow:hidden;display:-webkit-box!important;-webkit-line-clamp:12;-webkit-box-orient:vertical;text-overflow:ellipsis;padding-bottom:0!important;padding-top:2rem!important}.custom-text::after{content:"";position:absolute;bottom:0;left:0;right:0;height:50px;background:linear-gradient(to bottom,rgba(255,255,255,0),#fff)}}function decriptionHeadingClick(){$(".description-text-zeno").removeClass("custom-text"),$(".read-more-zeno").css("display","none")}.slick-list .text-center{color:#6a6a6a!important}.description-inside-accordian .zn-title{font-weight:400;font-size:14px!important;line-height:16px;font-family:Ubuntu,sans-serif!important;color:#2f4f4f!important;letter-spacing:1.2px}.description-inside-accordian .zn-text{line-height:1.5!important;font-family:Ubuntu,sans-serif!important;font-weight:300!important;font-size:13px!important}.description-icons{display:flex!important;align-items:baseline!important}.zenoTab-active{border-bottom:1px solid #222!important}.zenoTab-active .zn-button-text{font-weight:400;color:#000!important}var sectionDescription;function scrollToSection(e){$(".zenoTab-active").removeClass("zenoTab-active"),$(event.target).parent().parent().addClass("zenoTab-active"),e.includes("description")?$(".section-description").html(sectionDescription):$(".section-description").html($("."+e).html())}setTimeout(()=>{sectionDescription=$(".section-description").html()},100)DESCRIPTIONTECHNICAL SPECIFICATIONCLASPABOUT THIS WATCHThe Reef 39.5 mm Forged Carbon introduces a new material expression to our dive watch collection—combining a forged carbon dial and interchangeable bezel with Formex’s patented fine adjustment system for exceptional comfort in any environment.Forged under heat and pressure from compressed carbon fibers, the dial reveals a naturally varied structure—each piece entirely unique. As light moves across its surface, subtle shifts in tone and texture emerge, evoking the fluid, ever-changing character of water. The bevelled date window at 6 o’clock, a hallmark of all Formex watches, is seamlessly integrated into the design.The forged carbon bezel follows the same philosophy. Its engravings are executed with extreme precision, then hand-filled with BGW9 Grade A Super-LumiNova for optimal legibility in low light. Like all Reef bezels, it features a 120-click unidirectional mechanism and can be removed and exchanged by hand—offering seamless versatility across the collection.Despite its robust specifications, the Reef 39.5 remains remarkably compact and slim, measuring just 11 mm in height with a balanced 45.5 mm lug-to-lug span. Combined with 300 meters of water resistance, a screw-down crown, and a COSC-certified Sellita SW300-1 with a 56-hour power reserve, it delivers true dive watch performance in a highly wearable form.Our gradual fine-adjustment systems across all strap and bracelet options ensure a precise fit throughout the day, adapting effortlessly to changing conditions.Read MoreFEATURESSwiss Made Automatic MovementAn Automatic, also called self-winding watch, is a mechanical watch in which the mainspring is wound automatically as a result of the natural motion of the wearer's arm, to provide energy to run the watch, making manual winding unnecessary. All our Automatic movements are manufactured in Switzerland.Unidirectional Rotating BezelFound in diving watches, the unidirectional rotating bezel is a unique feature that helps measure diving time in a handy and effective manner. The bezel can only rotate in a counter-clockwise direction, which ensures diver's safety even in the case of any accidental manipulation underwater.Screw-Down CrownA screw-down crown is a threaded wi
Details and photos come from Formex’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
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