{"product_id":"citizen-chrono-master-day-date-4-520840y","title":"Citizen Chrono Master Day Date 4-520840Y","description":"\u003cp\u003eThe Citizen Chrono Master stands as an icon of precision and craftsmanship in Citizen's storied history of watchmaking. First introduced in 1967, this high-end watch was designed to meet chronometer-grade standards of accuracy. However, due to restrictions on using the \"chronometer\" designation outside Switzerland, Citizen ingeniously rebranded the series as \"Chrono Master,\" setting it apart with the signature eagle mark proudly displayed on the dial and case back.\u003c\/p\u003e\u003cp\u003eBuilding on the legacy of Citizen's earlier 1962 hand-wound \"Chronometer\" watches, the ChronoMaster offered both hand-wind and automatic movements, catering to a range of preferences that certainly make it fascinating.\u003c\/p\u003e\u003cp\u003eToday we're offering this beautiful and unused Ref.4-520840Y as the Day-Date automatic variant of this series.\u003c\/p\u003e\u003cp\u003eThe silvery-white sunburst dial is a visual treat, with a minimalist yet striking layout. The oval day window at 12 o'clock displays days in Japanese (Sundays in red and weekdays in black), while the date window at 3 o'clock provides additional functionality. The silver Citizen logo beneath the day window and the iconic eagle emblem above 6 o'clock reflect the watch's premium status.\u003c\/p\u003e\u003cp\u003eThis Chronomaster is powered by the automatic Cal.5240 with 33 jewels, beating at 18,000 BPH. It can be hand-winded, has a quick set date, and hacks for better time settings.\u003c\/p\u003e\u003cp\u003eA true gem of Japanese vintage craftsmanship, unused examples of Citizen's Chrono Master are incredibly rare—especially one like this, complete with its original straps and tag.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCondition report\u003c\/strong\u003e\u003cbr\u003eThis Chrono Master is in exceptional condition, retaining its factory sharp edges and showcasing stunning polished angular edges. While the case shows only very light scratches from storage, they are minimal and hardly noticeable.\u003c\/p\u003e\u003cp\u003eThe original silver dial is flawless. Both the handset and crown are original and remain in pristine condition. The case back is beautiful with few storage scratches and retains the original sticker on the top of the iconic medallion. The glass is clear and free of visible scratches.\u003c\/p\u003e\u003cp\u003eThe watch comes with its original straps, buckle and tag.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cbr\u003eBRAND: Citizen\u003cbr\u003eMODEL: Chrono Master\u003cbr\u003eREFERENCE: 4-520840Y\u003cbr\u003eDIAL: Original silver dial\u003cbr\u003eCASE MATERIAL: Stainless Steel\u003cbr\u003eCASE DIMENSIONS: 36 x 42 mm diameter; 11mm thickness, 18mm lug width\u003cbr\u003eCRYSTAL: Mineral Crystal\u003cbr\u003eCASE BACK: Screw-in Stainless Steel\u003cbr\u003eMOVEMENT: Hand-wound 25J Cal.0700\u003cbr\u003eManufacturing date: July 1969\u003cbr\u003eService History: Unknown, ±2s\/day\u003cbr\u003eBracelet\/Strap: Original signed leather straps with original buckle and tag\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShipped from Tokyo, Japan.\u003c\/strong\u003e\u003c\/p\u003e","brand":"THE TOKEI CLUB","offers":[{"title":"Default","offer_id":47130335772847,"sku":null,"price":0.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/1450\/7695\/files\/file_bb52a314-eee0-42cf-b076-3ac553d7d18a.jpg?v=1782903043","url":"https:\/\/thetokeiclub.jp\/products\/citizen-chrono-master-day-date-4-520840y","provider":"THE TOKEI CLUB","version":"1.0","type":"link"}