{"product_id":"citizen-blue-angels-wristwatch-at8020-54l-jy8078-52l","title":"CITIZEN Blue Angels AT8020-54L\/JY8078-52L","description":"\u003ch2\u003e\u003cstrong\u003eAT8020-54L\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNo regular battery replacement is required.\u003cbr\u003eCitizen’s proprietary \u003cstrong\u003eEco-Drive\u003c\/strong\u003e technology converts sunlight and even small amounts of indoor light into electrical energy, continuously powering the watch. Once fully charged, it operates for long periods even in complete darkness, eliminating the need for periodic battery changes.\u003c\/p\u003e\n\u003cp\u003eAlways keeps accurate time.\u003cbr\u003eThis model receives standard radio signals transmitted from atomic clocks—known for an accuracy of one second in 100,000 years—and automatically corrects the time and calendar in four regions worldwide: \u003cstrong\u003eJapan, China, the United States, and Europe\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eDisplays local time anywhere in the world in just two steps.\u003cbr\u003eEquipped with the \u003cstrong\u003eDirect Flight\u003c\/strong\u003e function, allowing easy adjustment to local time when traveling abroad.\u003c\/p\u003e\n\u003cp\u003eResistant to shocks and magnetism for precise timekeeping.\u003cbr\u003eCitizen’s proprietary \u003cstrong\u003ePerfeX\u003c\/strong\u003e technology integrates three features—\u003cstrong\u003eJIS Class 1 anti-magnetic resistance, shock detection, and automatic hand correction\u003c\/strong\u003e—to prevent hand misalignment caused by impact or magnetic interference.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number:\u003c\/strong\u003e AT8020-54L\u003cbr\u003e\u003cstrong\u003eCaliber No.:\u003c\/strong\u003e H800\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMovement:\u003c\/strong\u003e Eco-Drive (solar-powered)\u003cbr\u003e\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±15 seconds per month (without radio signal reception)\u003cbr\u003e\u003cstrong\u003ePower Reserve:\u003c\/strong\u003e Approx. 10 months (with power-save function activated)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRadio Signal Reception:\u003c\/strong\u003e Japan \/ China \/ USA \/ Europe\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 179 g\u003cbr\u003e\u003cstrong\u003eThickness:\u003c\/strong\u003e 12.0 mm\u003cbr\u003e\u003cstrong\u003eCase Size:\u003c\/strong\u003e 43.0 mm (width)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCase Material:\u003c\/strong\u003e Stainless steel\u003cbr\u003e\u003cstrong\u003eCase Finish:\u003c\/strong\u003e Partial blue-tone plating\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBand Material \/ Type:\u003c\/strong\u003e Stainless steel\u003cbr\u003e\u003cstrong\u003eClasp:\u003c\/strong\u003e Triple-fold push-button clasp\u003cbr\u003e\u003cstrong\u003eBand Width:\u003c\/strong\u003e 23.0 mm\u003cbr\u003e\u003cstrong\u003eAdjustable Wrist Size:\u003c\/strong\u003e 150–194 mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGlass:\u003c\/strong\u003e Sapphire crystal with anti-reflective coating\u003cbr\u003e\u003cstrong\u003eWater Resistance:\u003c\/strong\u003e 20 ATM (200 meters)\u003cbr\u003e\u003cstrong\u003eMagnetic Resistance:\u003c\/strong\u003e JIS Class 1\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLuminous hands and indexes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSlide rule bezel (aviation calculation scale)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFunctions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePower reserve indicator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCharge warning function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOvercharge prevention function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower-save function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApprox. 10 months of operation on full charge (with power save)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMulti-band radio-controlled timekeeping (Japan, China, USA, Europe)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomatic signal selection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScheduled reception\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eManual reception\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerpetual calendar\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDay \u0026amp; date display\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e24-hour display\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1\/20-second chronograph (up to 60 minutes)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDirect Flight function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWorld time (26 time zones)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDaylight saving time function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePerfeX Multi 3000\u003c\/strong\u003e (JIS Class 1 anti-magnetic, shock detection, automatic hand correction, four-region radio reception)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eJY8078-52L – Blue Angels\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInspired by aircraft cockpit instruments, this model features a highly legible dial design paired with a bold stainless steel case that evokes the strength and presence of an aircraft body. The dial includes a \u003cstrong\u003especial “Blue Angels” marking\u003c\/strong\u003e, making it a distinctive limited-design model.\u003c\/p\u003e\n\u003cp\u003ePart of the \u003cstrong\u003ePROMASTER SKY Series\u003c\/strong\u003e, this pilot’s watch is designed for those who push beyond boundaries and perform on the global stage. It pays tribute to the \u003cstrong\u003eU.S. Navy Flight Demonstration Squadron “Blue Angels,”\u003c\/strong\u003e renowned worldwide for their precision aerobatics.\u003c\/p\u003e\n\u003cp\u003eNo regular battery replacement is required.\u003cbr\u003eCitizen’s proprietary \u003cstrong\u003eEco-Drive\u003c\/strong\u003e technology converts sunlight and even minimal indoor light into electrical energy, continuously powering the watch. Once fully charged, it runs for extended periods even in darkness.\u003c\/p\u003e\n\u003cp\u003eAlways maintains precise time.\u003cbr\u003eBy receiving standard radio signals transmitted from atomic clocks—accurate to one second in 100,000 years—this watch automatically adjusts the time and calendar across \u003cstrong\u003efour global regions: Japan, China, the United States, and Europe\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eResistant to shocks and magnetism for reliable accuracy.\u003cbr\u003eCitizen’s exclusive \u003cstrong\u003ePerfeX\u003c\/strong\u003e technology integrates \u003cstrong\u003eJIS Class 1 anti-magnetic resistance, shock detection, and automatic hand correction\u003c\/strong\u003e, preventing hand misalignment caused by impact or magnetic interference.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number:\u003c\/strong\u003e JY8078-52L\u003cbr\u003e\u003cstrong\u003eCaliber No.:\u003c\/strong\u003e U680\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMovement:\u003c\/strong\u003e Eco-Drive (solar-powered)\u003cbr\u003e\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±15 seconds per month (without radio signal reception)\u003cbr\u003e\u003cstrong\u003ePower Reserve:\u003c\/strong\u003e Approx. 3.5 years (with power-save function activated)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRadio Signal Reception:\u003c\/strong\u003e Japan \/ China \/ USA \/ Europe\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 189 g\u003cbr\u003e\u003cstrong\u003eThickness:\u003c\/strong\u003e 14.5 mm\u003cbr\u003e\u003cstrong\u003eCase Size:\u003c\/strong\u003e 45.4 mm (width)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCase Material:\u003c\/strong\u003e Stainless steel\u003cbr\u003e\u003cstrong\u003eCase Finish:\u003c\/strong\u003e Partial blue-tone plating\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBand Material \/ Type:\u003c\/strong\u003e Stainless steel\u003cbr\u003e\u003cstrong\u003eClasp:\u003c\/strong\u003e Triple-fold push-button clasp\u003cbr\u003e\u003cstrong\u003eBand Width:\u003c\/strong\u003e 22.0 mm\u003cbr\u003e\u003cstrong\u003eAdjustable Wrist Size:\u003c\/strong\u003e 128–200 mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGlass:\u003c\/strong\u003e Sapphire crystal with anti-reflective coating\u003cbr\u003e\u003cstrong\u003eWater Resistance:\u003c\/strong\u003e 20 ATM (200 meters)\u003cbr\u003e\u003cstrong\u003eMagnetic Resistance:\u003c\/strong\u003e JIS Class 1\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLuminous hands and indexes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAviation slide rule bezel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFunctions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePower reserve indicator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCharge warning function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOvercharge prevention function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower-save function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApprox. 3.5 years of operation on full charge (with power save)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMulti-band radio-controlled timekeeping (Japan, China, USA, Europe)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScheduled reception\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eManual reception\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePerpetual 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