Leather Strap, Fixed Blue Ruby Tachymeter Bezel, Diamond Set Analog Dial (Roman Numerals), Minute Markers, Luminescent Hour/Minute Hands, Automatic Movement Calibre 4130 with Chronometer Accuracy and 72-Hour Power Reserve, Sapphire Crystal, Screw-Down Crown, Solid Case Back, Round Case Shape, Size: 40mm, Tang Clasp, Water Resistant to 100m (330ft), Functions: Chronograph, Hour, Minute, Second, Chronometer. Luxury Swiss Made Watch.