The BALL Engineer III Marvelight Bronze Star reference number NM2186C-L4J-BK is an automatic, anti-magnetic and shock-resistant watch with a 43mm bronze case and a black dial.
 

• Movement: Automatic caliber BALL RR1102 (base ETA 2836-2), Swiss-made
  • Power Reserve: 38 hours
• Case Material: Bronze with a Mu-metal shield for anti-magnetism
• Case Dimensions: 43mm diameter, 13.45mm thickness
• Dial Color: Black
• Crystal: Anti-reflective sapphire crystal
• Water Resistance: 100m / 330ft (10 ATM)
• Strap: Brown calf leather strap with a bronze pin buckle
• Functions: Hours, minutes, sweep seconds, and day & date display at the 3 o'clock position
• Luminescence: 15 micro gas tubes on the hour, minute, and second hands, and dial for night reading capability
• Anti-Magnetism: Resistant to 80,000 A/m (with a Mu-metal shield system)
• Shock Resistance: Features the patented SpringLOCK® and patented Amortiser® anti-shock systems (tested to 5,000 Gs)
• Crown: Screwed-in crown
• Caseback: Screw-down caseback
• Approximate Weight: 100g