Exterior: Stainless steel case (partially 18K pink gold) Bezel: Ceramic Back cover: Sapphire glass Back lid specifications: See-through screw back Glass material: dual curve sapphire Coating: Internal anti-reflective coating Case size: Width 43.8mm Height 51.2mm Thickness 16.1mm Band width: 21mm Nakadome: One-push three-fold method Arm circumference (longest): 201mm Movement: 9R86 Instructions Drive system: Spring drive automatic winding (with manual winding) Driving period: Lasts approximately 72 hours (approximately 3 days) at maximum winding Accuracy: Average monthly difference of ±15 seconds (equivalent to daily difference of ±1 second) Waterproofing: Reinforced waterproofing for daily life (10 ATM) Antimagnetic: Yes Weight: 190g others: 18K pink gold crown and buttons Screw lock crown Nakadome part 18K pink gold Number of stones: 50 stones 24 hour hand (dual time display function) Stopwatch function (30 minute total/12 hour total) Power reserve display function Calendar-linked time difference correction function