Jaeger-Lecoultre JJF - Original Weight Moon Phase Master .Jaeger-LeCoultre Moon Phase Master Series .The latest version from JJF Factory, featuring the original weight edition, measures 39MM in diameter and 9.6MM in thickness, currently the thinnest and closest to the original available on the market.1. The movement uses a Dandong integrated Caliber movement, synchronized with the original model, and features finely engraved filled oil lettering on the case back to restore details! This is not a modification of other generic movements or a deck movement commonly found on the market.2. The case is made of L-grade stainless steel, processed with CNC technology, resulting in an almost perfect slim and sleek design! .3. The strap is made from genuine Italian calfskin and has been upgraded to the latest version with a quick-release feature, matching the original buckle design, while the curvature of the buckle has been increased to enhance wearing comfort and feel.4. The slightly curved dial features a sunburst pattern and is finished with enamel polishing, with the logo upgraded from a printed version in older models to a three-dimensional metal logo, greatly enhancing the overall texture and detail! .JJF Factory strives for perfection and invites you to experience the Moon Phase Master that is closest to the original!