Jaeger LeCoultre, Master, Model: Q1532520, Automatic mechanical, 18k rose gold, case diameter: 40mm 4. Movement: Cal.750 automatic chronograph movement It has a power reserve of 45 hours and a frequency of 28,800 vibrations per hour ◦ Back transparent polishing: Geneva waves, hand-chamfered inner corners, blue steel screws. 1. Ultra-thin formal chronograph benchmark Jaeger-lecoultre's ultra-thin movement technology ensures excellent thickness control for chronograph models, allowing them to smoothly fit into the cuffs of a suit without any burden for business formal wear. Retro and refined business style The silver-white matte dial, rose gold case and blue steel hour hand are designed in a restrained and understated color scheme, making it suitable for workplace meetings, dinner parties and daily commutes.