Description
Basic Information Number 310.30.42.50.01.002 Brand Omega Series Speedmaster Movement Type Manual Mechanical Gender Men’s Alias 3861 Black Speedmaster Movement Movement Model 3861 Movement Type Manual Mechanical Manufacturer Omega Balance Wheel Free-sprung Balance Wheel Frequency 21,600 vibrations per hour Hairspring Silicon Hairspring Number of Jewels 26 Power Reserve 50 hours Technical Certifications Swiss Observatory Certification, Master Chronometer Appearance Case Diameter: 42 mm Case Thickness: 13.2 mm Dial Color: Black Dial Shape: Round Strap Color: Silver Clasp Type: Folding Clasp Case Back: Transparent Case Back Weight: 138 grams Water Resistance: 50 meters Hour Marker Type: Bat Hour Markers, Luminous Clasp Spacing: Not Available Lug Spacing: 20 Millimeter material; Case material: Stainless steel; Dial material: Not available; Bezel material: Not available; Crystal material: Domed, scratch-resistant sapphire crystal with anti-reflective coating; Crown material: Stainless steel; Strap material: Stainless steel; Buckle material: Stainless steel; Functions: Chronograph; Antimagnetic. Thanks to the helpful users jacky0919 and duoqinuo for correcting these product parameters.












