Casio's new Pro Trek watch is made of corn and castor seeds

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Casio Pro Trek Bio Mass Tough Solar Watch PRG340-3 – Watch Direct Australia

Casio brand's first eco-model is born from the popular outdoor watch series “Pro Trek”. – GO OUT

Casio Pro Trek Bio Mass Tough Solar Watch PRG340-3 – Watch Direct Australia

Climb Higher with the New Casio PRO TREK PRG-340 » Explorersweb

Casio expands it range of eco-friendly watches made from castor seeds and corn｜Arab News Japan

Climb Higher with the New Casio PRO TREK PRG-340 » Explorersweb