Orient Star x Automatic ft. M45 F7 Semi Skeleton aka Moon Phase Men Formal Round 100m Water Resistant Watch RE-BT0006L Discover the Orient Star Classic M45 Mechanical Moon Phase, powered by the in-house automatic Caliber F7M42 with a 50-hour power reserve. Housed in a 41mm stainless steel SUS316L case with a dual-curved sapphire crystal featuring super anti-reflective coating. The semi-skeleton dial reveals the 22-jewel movement, complemented by a moon phase complication, date display, and power reserve indicator. Completed with a stainless steel bracelet and an additional cordovan strap. Water-resistant to 50 meters. Caliber Number / Movement F7M42 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 50 hours (+15 to -5 seconds per day) Crystal Sapphire crystal (dual-curved, super anti-reflective coating) Luminous Nil Case / Band Material Stainless steel case with stainless steel band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 13.8 mm Diameter: 41.0 mm Length: 49.0 mm Lug width: 20.0 mm Other Specifications Orient Star x Automatic ft. M45 F7 Semi Skeleton aka Moon Phase Made in Japan Additional leather (cordovan) band inclusive (deployment clasp with push-button release) Magnetic resistance (4,800 A/m) See-through case back Screw case back 24 jewels Date display Moon phase display Power reserve indicator Equipped with small second hand Stop second hand function (hacking mechanism) Regular timekeeping (analog display)