{"product_id":"seiko-calibre-3b21a-solar-radio-controlled-quartz-movement","title":"Seiko Calibre 3B21A Solar Radio Controlled Quartz Movement","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSeiko Calibre 3B21A Solar Radio-Controlled Quartz Movement\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRestore a compatible watch with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSeiko Calibre 3B21A solar radio-controlled quartz movement\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, featuring hour, minute, and central seconds hands.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis movement converts light received through a compatible solar dial or panel into electrical energy stored in a rechargeable secondary battery. When correctly assembled, it can synchronize the displayed time by receiving Japan’s \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eJJY standard-frequency radio signals\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e from the Fukushima and Kyushu transmitting stations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAutomatic radio reception is normally attempted at approximately 2:00 AM, with another attempt at approximately 4:00 AM if the first reception is unsuccessful. Manual signal reception is also supported.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProduct Specifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProduct Type: Analogue Solar Radio-Controlled Quartz Movement\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManufacturer: Seiko\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCalibre: 3B21A\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDisplay: Hour, Minute and Central Seconds\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCalendar: No\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRadio-Signal Compatibility: Japan JJY 40 kHz and 60 kHz Signals\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRadio Reception: Automatic and Manual\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTime-Zone Adjustment: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQuartz Frequency: 32,768 Hz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAccuracy Without Radio Synchronization: Within ±15 Seconds per Month\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOperating Temperature: −10°C to +60°C\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDriving System: Separate Step Motors for Hour\/Minute and Seconds\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Source: Rechargeable Secondary Battery\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOperating Duration: Approximately 6 Months from a Full Charge\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMaximum Duration with Power Saving: Approximately 18 Months\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eEnergy-Depletion Warning: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower-Saving Function: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAutomatic Hand-Position Correction: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eReception-Level Display: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eReception-Result Display: Yes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eElectronic Circuit Reset: Yes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRadio synchronization operates only within supported \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eJJY reception areas\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and depends on location, signal conditions, building structure, electrical interference, and correct movement assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlease compare the complete calibre marking, movement dimensions, hand fittings, stem and button positions, antenna configuration, rechargeable battery, solar panel, dial construction, and movement holder with your existing components before ordering. Professional installation is strongly recommended.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePackage Contents\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1 × Seiko Calibre 3B21A Solar Radio-Controlled Quartz Movement Only\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eImportant: The rechargeable battery, solar panel, winding stem, and all other accessories are not included.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eSeiko and its associated marks are trademarks of their respective owner. The name and calibre reference are used solely for accurate product identification.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"WR Accessories","offers":[{"title":"Default Title","offer_id":43297453113553,"sku":"MV-Q-3B21A-1","price":42.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0589\/6559\/0225\/files\/SeikoCalibre3B21ASolarRadioControlledQuartzMovement.jpg?v=1788840934","url":"https:\/\/wraccessories.com\/it\/products\/seiko-calibre-3b21a-solar-radio-controlled-quartz-movement","provider":"WR Accessories ","version":"1.0","type":"link"}