The Ball Engineer II Volcano NM3060C-PCJ-GY is an automatic chronometer-certified watch with a patented Mumetal & Carbide composite case and high anti-magnetic resistance.
 

• Movement: Automatic caliber BALL RR1102-C (COSC certified chronometer)
• Case Material: Patented Mumetal & Carbide composite case (provides high anti-magnetic properties)
• Case Diameter: 45 mm
• Case Thickness: 12.4 mm
• Water Resistance: 100m / 330ft
• Antimagnetic Resistance: Up to 80,000 A/m (A-Proof® system)
• Shock Resistance: 5,000 Gs
• Crystal: Anti-reflective coated sapphire crystal
• Dial Color: Grey/Black
• Luminescence: 15 micro gas tubes on hands and dial for consistent illumination
• Power Reserve: 38 hours
• Functions: Hours, minutes, sweep seconds, day, and date
• Strap: Typically comes with a black rubber strap (sometimes an additional nylon canvas strap is included)
• Origin: Swiss Made