Steeldive US Seller! 47.5mm STEELDIVE SD1975 TUNA NH35 Automatic 300M Diver
Steeldive US Seller! 47.5mm STEELDIVE SD1975 TUNA NH35 Automatic 300M Diver
Don't risk customs duties (up to 11.2% per watch) or inspection fees (around $30.00 a parcel) from purchasing from an overseas seller. I know, this happened to me and are a very real possibility for you that can easily turn a $80.00 watch into a $115.00 watch or more.
SteelDive SD1975 – A Tribute to the Iconic Seiko Tuna Can Diver
Experience the perfect blend of heritage and modern craftsmanship with the SteelDive SD1975, a faithful tribute to the legendary Seiko "Tuna Can" Diver. Designed for both diving enthusiasts and collectors, this timepiece captures the rugged design, extreme durability, and functional excellence of one of the most famous dive watches ever made.
A Brief History of the Seiko Tuna Can
The Seiko Tuna was born in 1975 after a professional saturation diver wrote to Seiko, complaining that existing dive watches couldn’t handle extreme underwater conditions. Helium gas seeped into traditional dive watches, causing the crystal to pop off during decompression.
Seiko responded with a groundbreaking innovation: the 6159-7010, later nicknamed the "Tuna Can" due to its large, round, shrouded case. This watch was the first of its kind to feature:
✔ Titanium Case – Corrosion-resistant and lightweight
✔ Shrouded Design – Extra protection against impacts and pressure
✔ Monocoque Case Construction – Eliminated the need for a helium escape valve
✔ 600m Water Resistance – A game-changer for professional divers
Seiko continued refining the Tuna over the decades, introducing quartz-powered models, 1000m water resistance, and even Spring Drive technology, solidifying its place as one of the most respected dive watches in history.
Why Choose the SteelDive SD1975?
The SteelDive SD1975 brings the iconic look and feel of the Seiko Tuna at a fraction of the price, while still delivering exceptional build quality and dive-ready performance.
Key Features:
✔ Automatic NH35 Movement – Reliable Seiko-based caliber for precise timekeeping
✔ 300m Water Resistance – Built for serious diving and everyday wear
✔ Screw-Down Crown & Caseback – Enhancing durability and water resistance
✔ Shrouded Stainless Steel Case – Iconic design with extra protection
✔ Sapphire Crystal – Scratch-resistant for long-lasting clarity
✔ Super Luminous Dial & Hands – Maximum visibility in low-light conditions
✔ Optional Silicone Strap – Comfortable and secure fit
This watch is perfect for those who admire the legendary Seiko Tuna but want an affordable alternative with modern upgrades. Whether you're an enthusiast, a diver, or a collector, the SteelDive SD1975 is a statement piece that delivers rugged durability and timeless style.
Condition & Purchase Details:
🛒 Brand New – Ships with original packaging
🚀 Fast & Secure Shipping
💳 Buy with Confidence – Trusted Seller
📢 Don’t miss your chance to own this modern tribute to a legendary dive watch!
Specifications (All Measurements are Approximate):
- Reference Number: SD1975
- Case Material: High Grade Stainless Steel
- Case Back: Closed screw down w/Logo
- Bezel: Yes - 120 Click Unidirectional
- Bezel Insert: Ceramic
- Crystal: AR Coated Sapphire
- Movement: TMI NH35 - 21,600 beat rate (3Hz), hacking seconds, unidirectional winding, 24 jewel, 41 hours of power reserve.
- Bracelet: 316L Stainless Steel
- Clasp/Buckle: Double Fold over Deployant w/ Safety
- Water resistance: 300m/30bar
- Luminous: BGW9 Blue Luminous
- Case Thickness: 15.5mm
- Case Diameter: 47.5 mm (without crown)
- Lug Size: 22 mm
- Lug to Lug: 44.2 mm
- Screw Down Crown?: Yes
- Warranty: Manufactures
- Accessories: Plastic Hard Case, Tag, Warranty Card, Instruction Manual, Bracelet Pin Pusher
| Brand: | Steeldive |
|---|---|
| Isin: | IOHKURSKGG1V |
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Don't risk customs duties (up to 11.2% per watch) or inspection fees (around $30.00 a parcel) from purchasing from an overseas seller. I know, this happened to me and are a very real possibility for you that can easily turn a $80.00 watch into a $115.00 watch or more.
SteelDive SD1975 – A Tribute to the Iconic Seiko Tuna Can Diver
Experience the perfect blend of heritage and modern craftsmanship with the SteelDive SD1975, a faithful tribute to the legendary Seiko "Tuna Can" Diver. Designed for both diving enthusiasts and collectors, this timepiece captures the rugged design, extreme durability, and functional excellence of one of the most famous dive watches ever made.
A Brief History of the Seiko Tuna Can
The Seiko Tuna was born in 1975 after a professional saturation diver wrote to Seiko, complaining that existing dive watches couldn’t handle extreme underwater conditions. Helium gas seeped into traditional dive watches, causing the crystal to pop off during decompression.
Seiko responded with a groundbreaking innovation: the 6159-7010, later nicknamed the "Tuna Can" due to its large, round, shrouded case. This watch was the first of its kind to feature:
✔ Titanium Case – Corrosion-resistant and lightweight
✔ Shrouded Design – Extra protection against impacts and pressure
✔ Monocoque Case Construction – Eliminated the need for a helium escape valve
✔ 600m Water Resistance – A game-changer for professional divers
Seiko continued refining the Tuna over the decades, introducing quartz-powered models, 1000m water resistance, and even Spring Drive technology, solidifying its place as one of the most respected dive watches in history.
Why Choose the SteelDive SD1975?
The SteelDive SD1975 brings the iconic look and feel of the Seiko Tuna at a fraction of the price, while still delivering exceptional build quality and dive-ready performance.
Key Features:
✔ Automatic NH35 Movement – Reliable Seiko-based caliber for precise timekeeping
✔ 300m Water Resistance – Built for serious diving and everyday wear
✔ Screw-Down Crown & Caseback – Enhancing durability and water resistance
✔ Shrouded Stainless Steel Case – Iconic design with extra protection
✔ Sapphire Crystal – Scratch-resistant for long-lasting clarity
✔ Super Luminous Dial & Hands – Maximum visibility in low-light conditions
✔ Optional Silicone Strap – Comfortable and secure fit
This watch is perfect for those who admire the legendary Seiko Tuna but want an affordable alternative with modern upgrades. Whether you're an enthusiast, a diver, or a collector, the SteelDive SD1975 is a statement piece that delivers rugged durability and timeless style.
Condition & Purchase Details:
🛒 Brand New – Ships with original packaging
🚀 Fast & Secure Shipping
💳 Buy with Confidence – Trusted Seller
📢 Don’t miss your chance to own this modern tribute to a legendary dive watch!
Specifications (All Measurements are Approximate):
- Reference Number: SD1975
- Case Material: High Grade Stainless Steel
- Case Back: Closed screw down w/Logo
- Bezel: Yes - 120 Click Unidirectional
- Bezel Insert: Ceramic
- Crystal: AR Coated Sapphire
- Movement: TMI NH35 - 21,600 beat rate (3Hz), hacking seconds, unidirectional winding, 24 jewel, 41 hours of power reserve.
- Bracelet: 316L Stainless Steel
- Clasp/Buckle: Double Fold over Deployant w/ Safety
- Water resistance: 300m/30bar
- Luminous: BGW9 Blue Luminous
- Case Thickness: 15.5mm
- Case Diameter: 47.5 mm (without crown)
- Lug Size: 22 mm
- Lug to Lug: 44.2 mm
- Screw Down Crown?: Yes
- Warranty: Manufactures
- Accessories: Plastic Hard Case, Tag, Warranty Card, Instruction Manual, Bracelet Pin Pusher
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