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Formex Reef 39.5 mm
Case
- Diameter
- 39.5mm
- Thickness
- 11mm
- Lug-to-lug
- 45.5mm
- Lug width
- 22mm
- Material
- Stainless Steel
- Water resistance
- 300m
Crystal & dial
- Crystal
- Sapphire
- Dial colour
- Bahama Blue
- Lume
- Super-LumiNova
Movement
- Caliber
- Sellita SW300-1
- Type
- Automatic
- Power reserve
- 56h
- Hacking
- No
- Hand-winding
- No
- Complications
- Time only
Sellita
A slim Swiss automatic from Sellita, a pin-compatible alternative to the ETA 2892-A2, beating at 28,800 vph with roughly 42–56 hours of power reserve. Favoured by brands needing a thinner movement than the SW200.
Design language
- Case shape
- round
- Dial style
- sunburst
- Bezel
- rotating
- Bracelet
- lug-attached
- Hands
- baton
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Reef 39.5 mm collection · 2 watches
8 colorways
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The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.
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