A nice looking watch from Marc Ecko which has a black strap. You don't have to worry about it getting slightly wet.
From Amazon
Marc Ecko Unisex Quartz Watch with Black Dial Analogue Display and Black Silicone Strap E08513G6
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Men's Watch Marc Ecko E08513G6 (Ø 44 mm)
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Men's Watch Marc Ecko E08513G6 (Ø 44 mm)