Specifications for the Ball Watch DM3090A-P10J-BK Fireman NECC: Movement: Caliber: Automatic caliber BALL RR1103 Type: Automatic Mechanical Watch Jewels: 25 Frequency: 28,800 vibrations per hour (4 Hz) Power Reserve: 38 hours Features: Chronograph, Date Display, Night Reading Case: Material: 904L Stainless Steel with Black TiC Coating Diameter: 40.5 mm Thickness: 13.2 mm Lug Width: 20 mm Case Back: Screwed-in Crown Crown: Screwed-in Crown Dial: Color: Black Markers: Luminous Arabic Numerals at 3, 6, 9, and 12 o'clock positions Hands: Luminous Silver-tone Features: 13 H3 Gas Tubes for Night Reading Crystal: Material: Anti-reflective Sapphire Crystal with Bubble Date Magnifier Water Resistance: Rating: 300 meters (990 feet) Compliance: COSC Chronometer Certified Strap: Material: Black Rubber with Tang Buckle Clasp: Tang Buckle Additional Features: Design: Business, Fashion, Sports Day and Date Display: Yes Durability: High durability with patented anti-shock system The BALL DM3090A-P10J-BK Fireman Automatic Black Dial Stainless Steel Case Rubber Strap Men's Watch is celebrated for its elegant design and reliable performance, making it a great choice for watch enthusiasts