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Amazon.com: Casio Men's 'Vintage' Quartz Metal and Resin Casual Watch, Color:Black (Model: F-91WM-9ACF), Black/Gold : Clothing, Shoes & Jewelry
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Pegor's F91 Kepler Is a Work-in-Progress Open-Hardware Smartwatch Reboot of Casio's Classic F-91W - Hackster.io
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