Omega Speedmaster "Omega Soul" manual 3861 back see-through model is the latest moon landing fourth-generation Speedmaster watch. 60.42.50.10.001 is a classic chronograph. The size and appearance of the watch are 42mm in diameter and 13.6mm in thickness. Made of Moonshine 18K gold, with a classic green PVD-treated stepped dial, showing the polished effect of solar rays, and the hands continue the style of moon watch hands. The green ceramic bezel is decorated with a tachymeter scale made of OMEGA Ceragold technology, and a three-eye chronograph The circles are located at 9 o'clock, 3 o'clock and 6 o'clock, which are used to display the daily running time second hand, 30-minute timer and 12-hour timer respectively. The strap adopts a five-bead strap design, which looks more elegant than the previous three-section plate strap with decorative patterns. Thinner, rounder, and thinner. The buckle has also been changed from a round to a flat design with six grooves. The watch has a simple design and practical functions. This legendary chronograph has participated in all six human landings so far. The monthly mission can be called a model of the brand’s pioneering spirit.,