JAL International Flights 70th Anniversary Commemorative Collaboration Limited Edition - 500 Units Limited in Japan Model Number: SBXY075 Caliber No: 8B63 Drive System: Solar Radio Wave Correction Accuracy: ±15 seconds per month on average (when not receiving radio signals) Operating Period: Approximately 9 months when fully charged, approximately 2 years in power-saving mode Number of Jewels: 10 Functions: ・Overcharge prevention function ・Instant start function ・Power save function ・Full auto calendar function (until December 31, 2099) ・World time function (25 time zones) ・Dual time display function ・Retrograde day of the week mechanism ・Automatic reception function ・Forced reception function ・Reception result display function ・Reception level display function ・Automatic hand position correction function ・Calendar (date and day of the week) function Case and Band: Case Material: Pure Titanium Case Coating: Dia Shield Case Size: Thickness: 11.4mm, Width: 42.7mm, Length: 48.5mm Glass Material: Sapphire Glass Coating: Super Clear Coating LumiBrite: Yes (hands and indexes) Clasp: One-push three-fold clasp Watch Specifications: Water Resistance: Reinforced water resistance for daily life (10 bar) Magnetic Resistance: Yes Weight: 105g I bought this watch because I often travel internationally and it was a hassle to adjust the time every time. However, it's in beautiful condition because I haven't used it since my one trip.