2025 Longines Ultra-Chron. $2450 Ref: L2.836.4.52.6 Complete set with AM green rubber and NATO straps included. Movement: L836 * Type: High-frequency, self-winding mechanical movement. * Frequency: 36,000 vibrations per hour (5 Hz). * Power Reserve: 52 hours. * Balance Spring: Monocrystalline silicon. * Certification: "Ultra Chronometer" certified by TIMELAB. * Functions: Hours, minutes, and seconds.  Case * Shape: Cushion-shaped. * Material: Stainless steel. * Diameter: 43 mm. * Thickness: 13.90 mm. * Lug-to-Lug: 49.00 mm. * Lug Distance: 22 mm. * Water Resistance: 30 bar (300 meters). * Case Back: Screw-down. * Crown: Screw-in. * Weight: 172.1 grams.  Bezel and Crystal * Bezel: Unidirectional rotating steel bezel with a sapphire insert and a 60-minute scale featuring Swiss Super-LumiNova. * Crystal: Scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides.  Dial and hands * Dial Color: Black with a grained texture. * Hands: Polished silver-tone hour and minute hands with Super-LumiNova. The minute hand has a red tip. * Hour Markers: Applied indexes coated with Swiss Super-LumiNova.  Bracelet * Material: Stainless steel. * Clasp: Triple safety folding clasp with a push-piece opening mechanism.  Plenty of references, deal with confidence. Willing to FaceTime for real-time viewing and to answer any questions.