Lady-Datejust 26 Black Sunbeam Dial 18K Yellow Gold Steel Jubilee 179173BKSJ

The Rolex Lady-Datejust 26 Ref. 179173 in the BKSJ configuration is a highly iconic and classic timepiece from the previous 26 mm generation, showcasing the celebrated two-tone combination of Yellow Rolesor (Oystersteel and 18K Yellow Gold). The watch is framed by the signature 18K Yellow Gold Fluted Bezel, a defining Rolex feature that provides brilliant light reflection. The dial features a classic Black Sunbeam finish , which is a variation of the sunray effect, offering a beautiful light play and exceptional contrast against the warm gold. The dial utilizes clean Applied Index Hour Markers (batons), set in 18K Yellow Gold, maintaining superb clarity and a refined, uncluttered look.

Key Features

Case	Material	Yellow Rolesor (Oystersteel and 18K Yellow Gold)
	Dimensions	$\text{26 mm}$ ($\text{Previous}$ $\text{generation}$ $\text{size}$)
	Water Resistance	$\text{100 metres}$ ($\text{330}$ $\text{feet}$)
	Bezel	Fluted 18K Yellow Gold (Rolex’s signature design)
	Crystal	$\text{Scratch}$–$\text{resistant}$ $\text{Sapphire}$ $\text{with}$ $\text{Cyclops}$ $\text{lens}$
	Reference	179173BKSJ
Dial	Color	Black Sunbeam (Classic black finish with sunray variation)
	Markers	Applied Index Hour Markers (Batons in 18K Yellow Gold)
	Aesthetic	Sharp black dial with clean index markers and iconic fluted bezel
Movement	Type	Perpetual, mechanical, self-winding
	Power Reserve	Approximately $\text{50}$ $\text{hours}$
	Caliber	$\text{Calibre}$ $\text{2235}$ ($\text{Previous}$ $\text{generation}$ $\text{movement}$)
	Technology	$\text{Parachrom}$ $\text{hairspring}$
Bracelet/Strap	Material	Jubilee Yellow Rolesor (five-piece links)
	Clasp	Concealed folding Crownclasp
Additional Info	Watch Style	Classic Two-Tone Dress Watch / Iconic Fluted Bezel
	Certification	$\text{Superlative}$ $\text{Chronometer}$
	Key Features	Fluted Bezel, Black Sunbeam Dial, Jubilee Bracelet, Yellow Rolesor
	Rolesor	$\text{Blend}$ $\text{of}$ $\text{Oystersteel}$ ($\text{strength}$) $\text{and}$ $\text{18ct}$ $\text{Yellow}$ $\text{Gold}$ ($\text{richness}$)

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