Like the original, the 50th-anniversary limited edition has three iconic crowns. One, at 3 o'clock, sets the alarm clock; the center adjusts the rotating inner bezel; and the last one, at 4 o'clock, sets the time. These have each been redesigned for improved ergonomics. With a 42 millimeter diameter, the case offers finishes worthy of a sporty-chic watch: a fine bezel and alternation of brushed and polished surfaces. The Jaeger-LeCoultre 956 manufacture caliber which animates it is equipped, like its ancestor, with a display of the central second time and a bell mechanism with a date stamp. The heir to the first movement of an automatic clock watch created by Jaeger-LeCoultre in the fifties, the Memovox has been constantly improved and still embodies its signature precision, durability, and reliability. It is also one of the rare ringing movements still in production, more than sixty years after its creation. Authentic and contemporary makes for a refined Jaeger-LeCoultre.