Silver-tone stainless steel case, octagon shape measuring 41mm diameter by 9.5mm thickness. Equipped with scratch-resistant sapphire crystal and a fixed bezel. Features an analog silver dial displaying luminescent markers and hands for easy reading at night. Includes four sub-dials: one for moonphase, month, date, and day of the week. Powered by Audemars Piguet Calibre 5134 automatic movement (based on 2120) with perpetual calendar functionality, leap year complication, hour/minute/second indications. Contains 38 jewels composed of 374 parts, beating at 19800 vph and offering a power reserve of approximately 40 hours. Exhibits through skeleton case back and screw down crown. Water resistant to 200 meters (660 feet). Includes deployment buckle with push-button clasp release mechanism.