LONGINES MASTER COLLECTION. Case: Shape: Round Material: Stainless steel and 18 karat yellow gold Glass: Scratch-resistant sapphire crystal Case Back: Transparent case back with sapphire crystal Dimension: Ø 25.50 mm Lug distance: 13 mm Lug-to-lug: 30.50 mm Thickness: 8.90 mm Water Resistance: Water-resistant to 3 bar Weight: 60.9 g Dial & Hands: Dial color: Silver "barleycorn" Hour markers: Diamond indexes Hands: Gilt hands Diamonds: Dial set with 12 Top Wesselton VS-SI diamonds, for a total of 0.034 carats Movement & Functions: Movement Type: Automatic Functions: Hours, minutes, seconds and date Caliber: L592 Movement Description: Self-winding mechanical movement beating at 28'800 vibrations per hour, with a power reserve up to 45 hours Strap: Material: Stainless steel and 18 karat yellow gold cap 200 Buckle: With triple safety folding clasp and push-piece opening mechanism