Alpina
Alpina Seastrong Diver 300
Photography on request
Front view
Dial, hands and bezel as delivered.
Case-back view
Case-back engraving and, where fitted, the sapphire display.
Movement
Calibre with its finishing and decoration.
On the wrist
Worn shot for proportion and strap drape.
Alpina · Seastrong Diver 300
Alpina Seastrong Diver 300
Reference COLL-SEASTRONGDIVER
Reference at a glance
- Brand
- Alpina
- Collection
- Seastrong Diver 300
- Model
- Alpina Seastrong Diver 300
- Reference number
- COLL-SEASTRONGDIVER
- Year / era
- Current and historical collection profile
- Complication
- Hours, minutes, seconds
- Movement
- Automatic mechanical calibre; exact calibre varies by reference
- Case material
- Stainless steel; alternate materials vary by reference
- Dial type
- Multiple manufacturer dial variants
- Strap / bracelet
- Bracelet and strap options vary by reference
- Water resistance
- Diving rating varies by reference
- Limited-edition status
- Varies by reference
Case, dial & bracelet
- Case dimensions
- Dimensions vary by reference
- Case thickness
- Not published consistently across variants
- Case material
- Stainless steel; alternate materials vary by reference
- Bezel
- Unidirectional timing bezel
- Crystal
- Crystal specification varies by reference
- Dial
- Multiple manufacturer dial variants
- Hands
- Varies by reference
- Indexes
- Varies by reference
- Bracelet / strap
- Bracelet and strap options vary by reference
- Clasp / buckle
- Varies by reference
- Water resistance
- Diving rating varies by reference
Movement
- Movement / calibre
- Varies by reference — Automatic mechanical calibre; exact calibre varies by reference
- Movement type
- Automatic mechanical calibre; exact calibre varies by reference
- Frequency
- Not published consistently across variants
- Power reserve
- Not published consistently across variants
- Number of jewels
- Not published consistently across variants
- Complications
- Hours, minutes, seconds
- Functions
- Hours, minutes, seconds
- Watchmaker
- Manufacturer attribution varies by reference
Production & market
- Production period
- Varies by reference
- Limited-edition quantity
- Varies by reference
- Current market information
- Collection profile; consult the individual reference before purchase.
Designer
Gérald Genta
Gérald Genta (1931–2011) trained as a goldsmith in Geneva and became the most influential watch designer of the 20th century. Working freelance, he sketched the Audemars Piguet Royal Oak overnight in 1970, followed by the Patek Philippe Nautilus, the IWC Ingenieur SL and the Bulgari Bulgari — defining the integrated-bracelet luxury sports watch as a category.
Historical significance
Seastrong Diver 300 is documented as a collection profile within Alpina. Specifications can differ between references and production years.
Interesting facts
- Specifications shown on this page describe the collection and may vary by individual reference.
The House
Alpina
Brand facts
- Founding year
- 1883
- Founder
- Gottlieb Hauser
- Headquarters
- Switzerland
- Tier
- Affordable & Tool Watches
- Major collections
- Alpiner, Seastrong, Startimer, Comtesse
- Signature technologies
- Shock-absorbing movement mounting · Anti-magnetic silicon escapement · In-house hairspring production
- Famous movements
- Quartz · Automatic COSC chronometer · Automatic Powermatic 80 · Automatic, 38-hour reserve
- Notable watches
- Alpina Alpiner 44 mm Silvered Platinum (1955) · Alpina Alpiner 42 mm Black 18k (1966) · Alpina Alpiner 44 mm Ice Carbon (1992) · Alpina Alpiner 44 mm Salmon 18k (1961)
Brand history
Alpina has spent more than 143 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Alpiner, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Gottlieb Hauser established Alpina in 1883, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Alpina calibre produced today.
Historical milestones
1883
Gottlieb Hauser founds Alpina in Switzerland.
1899
Alpina earns its first international recognition for precision timekeeping.
1969
The quartz era forces Alpina to redefine mechanical watchmaking.
1990
Alpina enters the modern collector market with its signature lines.
2024
Alpina continues to produce Alpiner, Seastrong, Startimer and other icons in limited numbers.