CASIO G-SHOCK GBDH2000-1A Move Heart Rate Monitor GPS Solar Activity W – NAGI
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Casio Men's G-Shock Move Pro, Digital Smartwatch, GPS and Multiple sensors + Heart Rate Monitor + Multisport Training Data. Quartz Solar Powered with Black Resin Strap (Model: GSW-H1000-1CR) - Walmart.com
Casio's solar-powered GPS watch is ideal for survivalists | Engadget