The inner workings of this handsome men's Akribos XXIV timepiece are displayed in a handsome skeleton dial and accented with blue hands. Sophisticated and stunning, this dapper watch features a brown leather strap. Case: Stainless steel, goldtone, beveled, round Caseback: Stainless steel, Krysterna, exhibition, screw-down Dial: Goldtone, skeletal Hands: Blue, skeletonized hour and minute Markers: Printed Roman numerals Subdials: Three, second time zone, seconds display, AM/PM moon phase indicator Dual time at 6 o'clock, seconds display at 9 o'clock, AM/PM moon phase indicator at 12 o'clock Strap: Genuine brown calfskin leather Clasp: Tang buckle with engraved Akribos XXIV logo Crystal: Shatter-resistant Krysterna front and back Crown: Push/pull knurled onion shaped with loop Movement: 17 jewel 9730 hand wind mechanical dual time movement Water resistance: 10 ATM/100 meters/330 feet Case measurements: 45 mm wide x 45 mm long x 15.5 mm thick Strap measurements: 22 mm wide x 9 inches long Box measurements: 2.5 inches wide x 11.5 inches long x 1.5 inches high Model: AK451YG Click here to view our Watch Sizing Guide . All measurements are approximate and may vary slightly from the listed dimensions. Men's watch bands can be sized to fit 7.5-inch to 8.5-inch wrists. This watch is powered by hand wind mechanical movement which means that you need to wind up the watch for it to work. The standard amount of time that a mechanical watch varies depending on the movement however 2 3 days is the average amount of time that the watch will run and then needs to be wound again to keep it functioning. Color: Clear. Gender: male. Age Group: adult.