Exterior: Stainless steel bezel: Ceramics Glass material: Dual curve sapphire Coating: Internal non-reflective coating Lumi Bright: Yes (needle, index) Case size: Horizontal 40.5 mm × thickness 14.7 mm Buckle: One-push three-fold method Movement: 9R66 Drive system: Spring drive Driving time: Maximum hoisting for about 72 hours (about 3 days) Accuracy: ±15 seconds per month (equivalent to ±1 second per day) Waterproof: Reinforced waterproof for daily life (20 bar) Anti-magnetic: Yes Other: 24 hour hand (dual time display function) Screw lock type crown With calendar (date) function 30 ...