![Professional 600m waterproof “Japan limited” diver’s watch[US Navy Diving Experiment Squadron “NEDU” specification]Engineer Hydrocarbon” 2 new models – Watch LIFE NEWS|Watch LIFE NEWS](https://personalshopperj.com/wp-content/uploads/2025/06/BALL_Top1.jpg)
Ball Watch, a Swiss watch brand that develops sturdy and highly functional mechanical watches, has announced the “Engineer Hydrocarbon Nedu G5 Japan Limited,” a limited edition model in Japan, from the popular “Engineer Hydrocarbon” series.
[Reservations and purchase applications will start from noon on Friday, June 20]
This work will be available at the Ball Watch Online Boutique (https://www.ballwatch.co.jp/) from noon on Friday, June 20th, and you can choose your favorite limited number from 01/50 ~ 50/50, which is a Japan limited number.
■Ref.DC3226A-S8CJ-BE。 TI (42mm diameter). 600m water resistance. Automatic (Cal.RR1402-C). Limited to Japan 50 pieces. JPY 693,000
BALL Watch
Engineer Hydrocarbon Nedu G5 Japan Limited
Diver’s chronograph with 600 m. water resistance. It was based on the “NEDU”, which was developed to celebrate “The US Navy Experimental Diving Unit” and incorporated the world’s first patented technology to incorporate an automatic pressure reducing valve into the crown and other latest specifications.
It is equipped with professional use functions throughout, including the patented “Crown Built-in Automatic Pressure Reducing Valve” technology that incorporates an automatic pressure reducing valve in the crown, the unidirectional rotating bezel with ceramic inserts, and the unique “Safety Lock Crown System” that protects the entire crown from impacts. The high functionality of 4800A/m antimagnetic and 7500Gs shock resistance is also a major attraction.
【Image】Compare all two models, “Engineer Hydrocarbon” Japan limited model
The biggest feature of this Japan limited specification is the dial. It uses blue-colored mother-of-pearl (MOP) made from processed mother-of-pearl shells, and has a beautiful complex color, pattern, and pale luster derived from the material.
The hands and indexes are equipped with the Ball Watch’s unique luminous micro-gaslight system, and the bezel scales are coated with Super-LumiNova to ensure visibility in the dark.
The extremely sealed case is made of grade 5 titanium, which achieves a weight reduction that is different from the strength of appearance. Grade 5 titanium is twice as hard as pure titanium (grade 2), has excellent corrosion resistance, and has a color closer to the appearance of stainless steel than the color of pure titanium. The bracelet with a robust folding clasp that can withstand a weight of 140 kg is also a highlight.
The movement is equipped with the Swiss C.O.S.C. certified chronometer “Cal. RR1402-C” that proves high accuracy. There are two color variations in the lineup: the chic “black ceramic bezel” and the “blue ceramic bezel” featuring a calm navy.
The planned selling price for both is 693,000 yen. The number of bottles limited to 50 is limited to 50 pieces worldwide. Pre-orders will start at authorized retailers nationwide and Japan’s official online shop from June 2025. At the official online shop, you can choose the model with the desired serial number.
【Image】”Engineer Hydrocarbon” series, comparing two Japan limited models
【Contact】
Ball Watch Japan
TEL.03-3221-7807
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Since its first appearance in 2012, the Engineer Hydrocarbon NEDU has reigned at the top of the collection as a symbol of professional diver’s watches. The name “NEDU” is derived from the US Navy Experimental Diving Unit, a diving experimental team of the US Navy. The unit is known for its scientific systematization of the “decompression diving table” at the dawn of saturation diving and is a legend who established the essential standards for modern professional diving.
Of course, the world’s first patented automatic pressure reducing valve built into the crown and the Safety Lock Crown system, which is the protection mechanism of the crown, are inherited.
The case material is made of grade 5 titanium, the first of its kind for a ball watch. Composed of 90% titanium, 6% aluminum, and 4% vanadium, this high-grade material is twice as hard as pure titanium, has excellent corrosion and heat resistance, and is known as an advanced material used in the aerospace and medical fields.
In addition, the bracelet has a tapered shape that combines titanium and stainless steel, achieving both rigidity and balance. The buckle is made of high-precision parts machined by CNC machining, and has a double-door locking structure that can withstand a tensile force of 140 kg heavier. It boasts durability that has cleared 5,000 opening and closing tests, and is also equipped with an extension mechanism that can be attached and detached from the top of a diving suit.
The movement is powered by a high-precision calibre with a Swiss C.O.S.C. certified chronometer. The “US Special Operations Combat Diver” emblem is embossed on the caseback, and together with the serial number indicating 50 pieces limited to Japan (black bezel and blue bezel combined), it creates a strong image and limited feeling of this model.
