Specifications: Brand: Omega Model: Constellation Perpetual Calendar Reference Number: 58783948 655/863 Movement: Omega Caliber 1680 – High-precision Swiss quartz with perpetual calendar functionality Case Diameter: 28mm Case Material: Stainless Steel Bezel: Fixed stainless steel with engraved Roman numerals Dial: Silver with "clous de Paris" guilloché texture, applied hour markers, blackened hands Crystal: Sapphire – scratch-resistant Bracelet: Integrated stainless steel bracelet with folding clasp Functions: Hours, minutes, seconds, date, perpetual calendar Water Resistance: 50 meters / 165 feet Year: Circa early 2000s Condition: Excellent pre-owned condition with minor surface wear consistent with careful use. Crystal is flawless. Last Serviced: April 2025