Glass Material Curved sapphire Band Material Silicon Glass Coating Anti-reflective coating on inner surface Case Size Thickness: 13.8 Diameter: 42.6. Movement Caliber Number 6R15 Movement Type Automatic with manual winding capacity Duration Approx. 50 hours Accuracy +25 to -15 seconds per day Other Details LumiBrite Lumibrite on hands and indexs Water Resistance 200m / 660ft diver's Features 23 jewels Date display Stop second hand function