Ball Engineer Hydrocarbon NEDU Automatic Watch DC3026A Day/Date Swiss - Original Bracelet

Watch Overview

This is a Ball Engineer Hydrocarbon NEDU automatic chronograph, reference DC3026A — a dive watch designed for demanding, real-world use.

The NEDU (Navy Experimental Diving Unit) designation references the U.S. Navy group responsible for developing diving and decompression standards, reflecting the technical intent behind this model.

It is powered by the BALL RR1402-C automatic chronograph movement, based on the Valjoux 7750 with 25 jewels. The watch features a chronograph, small seconds, 30-minute and 12-hour counters, along with a day and date display. It is also COSC-certified, meeting chronometer accuracy standards.

The black dial is clean and highly legible, with applied markers and hands fitted with tritium gas tubes for constant visibility in all lighting conditions. The layout is well balanced, with the chronograph sub-dials and day/date display positioned for easy reading.

The 42mm titanium case offers a strong yet lightweight build, equipped with a unidirectional rotating bezel, sapphire crystal, patented crown protection system, and integrated helium release feature. It is rated for 600 meters of water resistance, placing it firmly in the category of professional dive watches.

It comes fitted with its original titanium and stainless steel bracelet with extension system. Fully inspected by our in-house watchmaker, the watch is running accurately and ready to wear.

Product Details

General Specifications

• Brand: Ball
• Type: Wristwatch
• Model: Engineer Hydrocarbon NEDU
• Reference: DC3026A
• Year / Era: Modern
• Gender: Men's
• Country of Manufacture: Switzerland

Dial & Display

• Display: Analog
• Color: Black
• Features: Tritium gas tube illumination, chronograph sub-dials, day/date display, luminous hands and markers

Movement

• Type: Automatic
• Caliber: BALL RR1402-C (Valjoux 7750 base)
• Jewels: 25
• Movement Functions:
  • Chronograph
  • Central chronograph seconds
  • 30-minute counter at 12 o'clock
  • 12-hour counter at 6 o'clock
  • Small seconds at 9 o'clock
  • Day/date display at 3 o'clock
  • COSC-certified chronometer
  • Shock-resistant
  • Anti-magnetic
• Power Reserve: Approx. 48 hours
• Frequency: 28,800 vph

Case & Band

• Material: Titanium
• Case Shape: Round
• Bezel: Unidirectional rotating (ceramic insert)
• Crystal: Anti-reflective sapphire
• Back: Screw-down
• Crown: Patented crown protection system
• Helium Valve: Integrated system
• Water Resistance: 600 meters / 2000 feet / 60 ATM
• Band Type: Original titanium/stainless steel bracelet with extension

Case Measurements (mm)

• Case Size: 42
• Case Lug to Lug: 53.5
• Case Thickness: 17

Additional Info

• Box & Papers: No
• Condition: Very good overall condition with light signs of wear consistent with use
• Notes: Fully inspected and authenticated by our in-house watchmaker. Running accurately and ready to wear

About Second Hand Horology

At SECOND HAND HOROLOGY, we offer a curated selection of watches ranging from vintage to modern, including both brand-new and pre-owned timepieces. We’re committed to quality, accuracy, and integrity. Our listings feature:

Professional, unedited photography and clear, transparent descriptions. Every watch is thoroughly inspected and securely packaged to ensure a confident, seamless buying experience.

We also warmly invite you to visit our physical shop and explore the collection in person.

Contact Us

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