The newly released "Submarine Warfare" watch, named after a submarine, was developed with a focus on improved legibility and magnetic resistance compared to previous models. The bold matte black dial, simple symmetrical design, and anti-reflective sapphire crystal enhance legibility, while the watch industry's first use of the special material Mu-metal for the inner case that secures and protects the movement inside the watch achieves high magnetic resistance of 80,000 A/m.
(From the left in the photo)
New "Submarine Warfare" model features a specially designed crown guard and an inner case made of mu-metal
Carefully designed for durability
This is a signature detail that is a hallmark of Ball Watch. The crown guard and screw-down crown are aligned to the same height, and a safety bar is installed across the crown guard. This safety bar cannot be closed unless the crown is fully screwed down, achieving complete waterproofing while also protecting the crown itself. Additionally, the special alloy "mu-metal" is used for the anti-magnetic inner case. This material, which provides electromagnetic shielding, covers the movement 360 degrees, preventing magnetism from reaching the movement. Its high magnetic resistance of 80,000 A/m means that even when it is placed in close contact with the speaker of a smartphone (approximately 22,400 A/m), the movement will not be affected.
Ball Watch "Submarine Warfare"
Automatic winding. COSC-certified chronometer. Ti case (42mm diameter). Water resistant to 300m. Magnetic resistance 80,000A/m. Shock resistance 7,500Gs. Limited to 1,000 pieces worldwide. 265,000 yen (excluding tax)
