The Zenith Pilot Automatic 03.4000.3620/21.I001 is a 40mm stainless steel watch featuring a black dial with horizontal grooves and large luminescent Arabic numerals. It is powered by the El Primero 3620 automatic movement, operating at 36,000 vibrations per hour and offering a power reserve of approximately 60 hours. The watch includes a date display at the 6 o'clock position and comes with interchangeable black rubber and brown calfskin leather straps. Water-resistant up to 100 meters, it combines robust functionality with a classic pilot watch design. Reference number: 03.4000.3620/21.I001.