Introduction | The Exclusive Tech – Ocean Commitment IV
100-piece limited edition, Titanium Case, 1315A Movement!
Blancpain has been a pioneer in dive watches since introducing the Fifty Fathoms in 1953.
With each new release, they continue pushing the boundaries of what a luxury diver’s watch can achieve.
The Tech – Ocean Commitment IV (Tech OC IV) is a 100-piece limited edition that embodies Blancpain’s commitment to ocean conservation while integrating advanced materials and modern aesthetics.
In this review, we’ll take an in-depth look at the unboxing experience, compare it to other 45mm Fifty Fathoms models, and explore the upgraded 1315A movement.
Unboxing | A Unique Packaging Experience
What’s Different About the Packaging?
The Tech OC IV (5029A 12B30 64A) packaging differs from previous Fifty Fathoms models, featuring a more eco-conscious design.
- New outer box material – More refined texture, matching the sustainable interior
- Updated Pelican case pattern – More rugged and premium feel
- Interior redesign – Switched from synthetic leather to an eco-friendly material
- Travel case upgrade – Changed from synthetic leather to fabric
Curious how this compares to previous Blancpain packaging?
What’s Included in the Box?
Inside the Tech OC IV package, you’ll find:
- Tech – Ocean Commitment IV watch
- Rubber strap
- BOC (Blancpain Ocean Commitment) Donation Certificate
- Warranty & user manual
Special Feature!
– Registering the watch on Blancpain’s official website triggers a €1,000 donation to ocean conservation efforts.
– The funds support the Sulubbai Environmental Foundation in Palawan, Philippines, and a BOC Circle Membership Certificate is issued upon registration.
Comparing the Fifty Fathoms 45mm Models | Same Size, Different Design
Same Diameter, Different Wearing Experience!
Though both Tech OC IV and other Fifty Fathoms models share a 45mm case size,
they wear very differently due to variations in design, materials, and case structure.
Comparison with Nageurs de Combat (5015E 1130 B52A)
- Case Design: Tech OC IV has a more angular case shape and a wider bezel, making it appear larger.
- Weight Difference: The titanium case makes Tech OC IV significantly lighter than stainless steel models.
- Dial & Bezel: Both feature a black sapphire bezel, but the Tech OC IV’s bezel grip has been improved for better usability.
Strap Comparison
- Nageurs de Combat: Sailcloth strap
- Tech OC IV: Rubber strap (optimized for real-world diving conditions)
Want a detailed comparison?
Movement Comparison | Caliber 1315 vs. Caliber 1315A
The Tech OC IV features Blancpain’s Caliber 1315A, an upgraded version of the well-regarded Caliber 1315.
While both movements maintain the same performance, 1315A offers enhanced finishing details.
Key Differences
1315 vs. 1315A
- Power Reserve: Both offer a 120-hour power reserve
- Anti-Magnetic Properties: Both offer a Equipped with a silicon balance spring
- Bridge & Gear Train Finishing Improvements
- BOC-exclusive rotor design – The 1315A rotor features a unique blue globe Blancpain Ocean Commitment engraving
Want to dive deeper into the 1315 vs. 1315A comparison?
Final Verdict | Is the Tech – Ocean Commitment IV Worth It?
Blancpain’s Tech – Ocean Commitment IV blends innovation with environmental responsibility, making it one of the most unique Fifty Fathoms models ever produced.
Who should consider this watch?
- Enthusiasts who prefer a lighter titanium case over traditional steel
- Collectors looking for a limited Fifty Fathoms edition
- Divers who need a helium escape valve
- Supporters of Blancpain’s ocean conservation initiatives
Who might pass on this watch?
- Those who prefer a classic Fifty Fathoms aesthetic
- Anyone who finds a 45mm case size too large
- Buyers looking for more strap versatility
With only 100 pieces available worldwide, the Tech – Ocean Commitment IV is a rare and meaningful addition to the Fifty Fathoms lineup.
Would you choose this watch?
Share your thoughts in the comments!
