Omega Seamaster 231.20.30.20.55.004 Automatic machinery, precision steel, 30mm

Description

Basic Information ID: 231.20.30.20.55.004 Brand: Omega Series: Seamaster Movement Type: Automatic Mechanical Gender: Ladies’ Movement Model: 8520 Movement Type: Automatic Mechanical Manufacturer: Omega Movement Diameter: 20 mm Movement Thickness: 5.3 mm Balance Wheel: Free-sprung Balance Spring Frequency: 25,200 rpm Hair Spring: Si 14-inch 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: Silver, 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 hour markers, Bezel material: 18k gold, Crystal material: Domed, double-sided anti-reflective, scratch-resistant sapphire crystal, Crown material: 18k gold, Strap material: Stainless steel, Clasp material: Stainless steel. Functions: Date display.