The Citizen PR1044-87X is a ladies' automatic mechanical watch, part of the "Luna Series" mechanical collection, featuring an open-heart skeleton dial design. It uses the in-house Caliber 6628 movement. 

• Model Collection: Ladies Mechanical Collection / Luna Series
• Movement: Automatic mechanical (Caliber 6628), supports both self-winding and manual winding
• Power Reserve: Approximately 40 hours when fully wound
• Case Material: Stainless steel with two-tone (silver and pink/rose gold) plating
• Case Shape: Round
• Case Diameter: 28.5mm
• Case Thickness: 9.9mm
• Dial: Pink, open-heart (partial skeleton) design at the 4 o'clock position
• Crystal (Glass): Spherical sapphire glass (scratch-resistant)
• Band Material: Stainless steel bracelet with two-tone plating
• Clasp Type: Three-fold push type buckle
• Water Resistance: 5 BAR (50 meters/165 feet), suitable for everyday wear, bathing, and showering but not swimming
• Weight: 69g
• Additional Features:
  • Blued hands with luminous points
  • Crown set with a blue glass ceramic cabochon