Longines Classic Collection Swiss Automatic Watch With A Stainless Steel Bracelet Strap, 25.50mm Case & A Black Lacquered Polished Coloured Dial With Date Window & Diamond Index Markers. Long experience meets vast expertise As a traditional watchmaking company, Longines has been producing exceptional timepieces since the very beginning. Today, the Longines Master Collection is the perfect illustration of this corporate ethos, as can be seen from the success enjoyed by this range since it was launched in 2005. All fitted with self-winding movements, the various models in this collection offer many special features. The Longines Master Collection brings together the classical elegance and excellent quality which never cease to delight those who appreciate exceptional timepieces. Case Back: Transparent case back with sapphire crystal Lug Distance: 13 mm Weight: 61.3 g Hands: Silvered polished hands Diamonds: Dial set with 12 Top Wesselton VS-SI diamonds, for a total of 0.034 carats Caliber: L592 Movement: Self-winding mechanical movement beating at 28'800 vibrations per hour, with a power reserve of approximately 45 hours Function: Hours, minutes, seconds and date Buckle: With triple safety folding clasp and push-piece opening mechanism Magnetic Resistance: No