Introducing the all new LONGINES L2.773.4 Eight Needle Moon Phase Multifunction Mechanical Watch. This model is equipped with the exclusive blue steel wheel automatic movement, modified from the original L2.687.5. It features the latest hollow automatic hammer, upgraded for improved stability, with a power reserve of up to 48 hours.The case is crafted from 316L stainless steel, with a precision size of 40mm, and has undergone CNC machining for ultra precise details, ensuring a waterproof depth of 100 meters.The dial and hands are made from fire tempered blue steel, featuring a moon phase display that is the first to utilize original mold design, customized to correct the original display s depth perception, matching the details of the authentic product.The watch is constructed from 316L stainless steel, meticulously polished and assembled by hand, ensuring a flawless finish with no sharp edges. It feels substantial and durable, and the actual product is absolutely impressive. A set of calf leather and original leather buckle in brown is included for your selection.