Omega Seamaster 231.18.30.20.55.001 Automatic machinery, precision steel, 30mm

Description

Basic Information: ID: 231.18.30.20.55.001; Brand: Omega; Series: Seamaster; Movement Type: Automatic; Gender: Women’s; Movement Model: 8520; Movement Type: Automatic; Manufacturer: Omega; Movement Diameter: 20mm; Movement Thickness: 5.3mm; Balance Wheel: Free-sprung; Balance Spring; Balance Wheel Frequency: 25200 rpm; Oscillations per Hour: Si 14-piece silicon hairspring, 28 jewels, 50-hour power reserve, Swiss Official Chronometer Testing Institute (COSC) certification. Case diameter: 30mm, Case thickness: Not available, Dial color: Silver-white, Dial shape: Round, Strap color: White, Clasp type: Folding clasp, Case back: Transparent, Weight: Not available, Water resistance: 150 meters, Hour markers: Diamond-set, Clasp spacing: Not available, Lug spacing: 14mm. Materials: Case material: Stainless steel, Dial material: Mother-of-pearl, diamond-set, Bezel material: Stainless steel, diamond-set, Crystal material: Domed, double-sided anti-reflective, scratch-resistant sapphire crystal, Crown material: Screw-down crown, Strap material: Leather, Clasp material: Stainless steel. Functions: Date display.