The Jaeger-LeCoultre Master Ultra Thin Perpetual watch in steel features a slim case and a perpetual calendar. It has a 39mm diameter and is water-resistant up to 5 bar. The dial is available in different shades of silver. The watch has dauphine hands and a black alligator leather strap. It has various functions such as day, year, moon phase, month, perpetual calendar, date, and seconds. The watch is automatic and has a power reserve of 38 hours. It comes with a deployant buckle.