SPECIFICATIONS Calibre No.:8203 Movement: Automatic Signal ReceptionWithout Radio Reception Function Strap: Titanium Water Resistant: Water Resistant to 200M Thickness: 13.7mm Case Size: 42mm Case: Titanium Surface ProcessingDuratect DLC Glass: Sapphire Glass Warranty: 3 years warranty Asia Limited Model 500pcs Serial number are stamped on the case back Super TitaniumTM Duratect Automatic Day and Date Display