Reference 331.53.42.51.02.001 draws on the storied heritage of the original Speedmaster '57, housing its round 41.5mm, 16.5mm-thick 18k yellow gold case around a silver dial. The transparent case back offers a view of the automatic chronometer movement within, while an anti-reflective, scratch-resistant sapphire crystal protects the dial up front. Water resistance is rated to 100m/330ft.
The movement carries COSC chronometer certification and drives a chronograph complication, reflecting the precision standards that have long defined the Speedmaster line. A fixed bezel frames the silver dial, and the case back remains transparent, allowing the automatic movement to be admired from the rear.
The watch is worn on a brown alligator/crocodile leather strap secured by a deployant buckle, lending a classic, dressy character to this iconic chronograph reference.
