This timepiece is a magnificent artifact from the Japanese Domestic Market (JDM), representing a time when Citizen engineered their ladies' watches with the same high-frequency precision as their men’s professional lines. The Citizen Cosmostar V2, reference 4-690613 Y, is defined by its elegant, oversized polished bezel and a striking deep navy blue dial that features a clean, minimalist layout with a date complication at 3 o'clock. It is powered by the sophisticated Citizen Caliber 6900, an in-house automatic movement that hums at a high-frequency $28,800 \text{ bph}$, providing a remarkably smooth sweep of the seconds hand and exceptional accuracy for a watch of this size.
The construction is incredibly robust, featuring the historic "Para Water" designation on the case back, which was Citizen’s proprietary term for their early water-resistant watches, a hallmark highly prized by vintage collectors today. The stainless steel case is paired with a delicate and stylish mesh bracelet, making it a perfect blend of a durable tool watch and a high-fashion accessory. The case back reveals the serial number 1127112, which definitively dates the production of this unit to January 1971. This is an exceptional acquisition for a collector who appreciates high-beat mechanical ingenuity, rare "Para Water" heritage, and classic 1970s Japanese elegance.
