Movement Reference Number: 8L45 Movement System: Automatic mechanical (manual winding optional) Accuracy: +10 to -5 seconds per day Power Reserve: Approximately 72 hours fully wound Jewel Count: 35 Functions: Frequency: 28,800 vibrations per hour (8 vibrations per hour) Stop Seconds Date Function Case Material: Stainless steel, Case Back: Stainless steel and sapphire crystal Case Dimensions: Thickness: 14.3 mm, Width: 41.0 mm, Height: 45.1 mm Crystal Material: Box-type sapphire crystal Crystal Coating: Anti-reflective coating on the inside Luminescence: Yes (hands and markers) Strap Material: Leather Clasp: Triple-folding push-button clasp Maximum Wrist Circumference: 195.0 mm Watch Specifications: Water Resistance: 100M (daily water resistance) Antimagnetic: Yes Weight: 103.0 g Other Functions: Screw-down crown Screw-down case back