GF Factory's Breitling Aviation Chronograph series continues to uphold the quality of the original model, featuring the finest craftsmanship, and is highly recommended! With a diameter of 42MM, it matches the authentic size perfectly. The strap is made of calfskin, identical to the genuine article in both material and detail.In terms of movement, it utilizes the excellent cal.01 custom movement, with each piece carefully selected to ensure optimal stability.The case maintains the original quality standards, with rigorous requirements for every aspect, from the choice of steel and precision of design drawings to the standardization of overall processing and polishing accuracy. Every detail is meticulously crafted to achieve the highest level of authenticity, providing consumers with a true sense of quality.The glass features the same dome-shaped mineral crystal as the original, with an anti-reflective coating and high-transparency sapphire that effectively maintains the intensity of blue light at the same angles.While the replication may not be overly difficult, attention to detail is essential for excellence. All components are interchangeable with the genuine product, making this a top-tier replica! A masterpiece of craftsmanship, we welcome you to appreciate it!