SJ Production GF Factory Breitling Aviation Chronograph Series R29 Upholding the original quality standards, with the finest craftsmanship, highly recommended! Diameter 42MM, matching the authentic size. It features a calfskin strap that is identical to the genuine strap in both material and detail.Movement: The watch is equipped with the excellent cal.01 custom movement. Each movement is meticulously selected to ensure optimal stability.Case: The case maintains the original quality of the shell, from the choice of steel to the precision of the design drawings, as well as the standardization of the overall processing and polishing accuracy. Every step is strictly controlled to achieve the highest degree of authenticity, providing consumers with a commitment to quality.Glass: The glass features the same domed sapphire crystal as the original, with an anti-glare coating that allows for high light transmission. The blue light refracted at the same angle is consistently maintained!.The replication difficulty is not very high, but attention to detail is essential for excellence. All components are interchangeable with the genuine product, which is what qualifies it as a top-tier replica! A masterful creation, welcome to appreciate the craftsmanship.S1 exquisitely recommends this multifunctional mechanical watch for men.