GF Factory's Breitling Aviation Chronograph series continues to uphold original quality, featuring the finest craftsmanship. Highly recommended! With a diameter of 42MM, it matches the size of the genuine product. The calfskin strap is identical to the authentic strap, both in material and detail.In terms of the movement, we use the excellent cal.01 customized movement, with each piece carefully selected to ensure optimal stability.The case retains the original quality with meticulous standards applied to the choice of steel, the precision of design drawings, and the overall processing and polishing. Every step is rigorously controlled to achieve the highest level of authenticity, providing consumers with a true attitude.The glass features the same dome-shaped sapphire crystal with anti-reflective coating as the original, maintaining a high degree of blue light reflection at the same angle! While the replication difficulty is not very high, attention to detail is essential to achieve excellence.All components are interchangeable with the genuine product, which defines it as a top-tier replica! A masterpiece of craftsmanship, we invite you to appreciate it.