The Rolex Datejust model 126203WSJ is a men's watch featuring an automatic mechanical movement, Calibre 3235 mechanism with 70-hour power reserve. It boasts a white dial accented by yellow gold hands and index hour markers at the 3 o'clock date aperture position. The case is crafted from steel and features a solid case back along with an 18k yellow gold Jubilee bracelet that complements the stainless steel construction. Protected by sapphire crystal resistant to scratches, ensuring clarity and durability for both day and night use scenarios. Water-resistant up to 100 meters or approximately 330 feet makes it suitable for everyday wear including swimming conditions but not diving. Chronometer-certified precision guarantees accurate timekeeping with automatic winding capability in the round shape case measuring 36mm in diameter.