Coral Reef
$5001,726
43 mm300 m WRSapphire
The Sensei's take
The Spinnaker Hass Automatic Coral Reef is an ideal choice for environmentally conscious watch enthusiasts seeking style and functionality. Its unique dial and 300m water resistance make it perfect for ocean activities, while supporting 4ocean's mission adds significant value to this timepiece.
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375 Pieces Only In proud partnership with 4ocean, this collection is built with purpose, designed for action, and created to turn everyday choices into lasting impact. At the heart of each timepiece lies a dial made from recovered ocean plastic — waste once destined to harm marine life. Each dial carries its own texture and its own story — a reminder that change begins with what we choose to value.
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At a glance
Strengths & trade-offs
Pulled straight from the spec sheet, framed for the buyer. The editorial verdict is the Sensei's take above.
Strengths
- Serious water resistance (300m)
- Scratch-resistant sapphire crystal
- Luminous dial and hands
Trade-offs
- Tall 17mm case
- Priced above what the spec suggests
- Currently sold out
Sensei Says
The specs, in plain English
On the wrist
At 43 mm it wears boldly, a long 50 mm lug-to-lug favours larger wrists.
The value
Fairly priced for what it is.
On the wrist
How will this watch fit me?
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Wrist circumference
Preferred fit
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Specifications
- Reference
- SP-5172-44
- Released
- 2026
- Production
- Limited edition
- Case diameter
- 43 mm
- Lug-to-lug
- 50 mm
- Thickness
- 17 mm
- Lug width
- 22 mm
- Case shape
- Round
- Case material
- stainless steel
- Water resistance
- 300 m
- Crystal
- Sapphire · anti-reflection
- Bezel
- None
- Caseback
- Exhibition
- Dial colour
- purple
- Dial finish
- Matte
- Indices
- applied index
- Lume
- Yes — Swiss Super-LumiNova
- Strap / bracelet
- stainless steel bracelet
- Clasp
- fold-over buckle with safety lock and push button
- Functions
- Hours, Minutes, Seconds, Date
- Fit
- Unisex
The maker
Spinnaker Watches
Spinnaker Watches draws inspiration from historical diving aesthetics and the allure of the ocean. They are committed to producing well-crafted, durable timepieces that tell stories of exploration and adventure while promoting conservation through various initiatives.
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