The Rolex Lady-Datejust Reference 79173 is a luxury timepiece produced from the late 1990s through the mid-2000s. It is highly regarded for its classic, smaller profile and two-tone "Rolesor" aesthetics. The reference 79173 replaced the older reference 69173. Its primary upgrade lies in the Caliber 2235 movement, which collectors recognize as one of Rolex's most reliable and easily serviceable calibers. While the exterior retains its classic look, the modern movement provides improved timekeeping consistency.
Case Size: 26mm diameter, ideally suited for wrists around 5 to 6.5 inches.
Materials: Yellow Rolesor—a combination of 904L stainless steel and 18k yellow gold.
Bezel: 18k yellow gold fluted bezel.
Dial: Champagne finish, typically configured with stick indices, Roman numerals, or factory diamond hour markers.
Movement: Rolex Caliber 2235 automatic movement with a ~42-hour power reserve and COSC chronometer certification.
Crystal: Scratch-resistant sapphire crystal featuring a Cyclops magnification lens over the date window.
Water Resistance: Up to 100 meters (330 feet) via a twinlock screw-down crown.
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