Citizen Watch - With the radio-controlled time-keeping function, the Citizen Promaster SKY series watch will automatically adjust the time to give you the precise time by capturing time signals in four areas
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Amazon.com: Professional Master Direct Flight CB5000-50L (Japan Domestic Genuine Products) : Everything Else
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Citizen Promaster Eco-Drive Radio Controlled Chronograph Men's Watch CB5000-50L | Watches for men, Stainless steel bracelet, Chronograph
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Amazon.com: Professional Master Direct Flight CB5000-50L (Japan Domestic Genuine Products) : Everything Else
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