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Amazon [amazon.com] has 42mm Casio Men’s Digital Illuminator Sport Watch (Black Resin) for $17.97.
Shipping is free with Prime or on $35+ orders.

Walmart [walmart.com] has 42mm Casio F108WH Series Men’s Digital Watch (F108WH-1ACF) for $17.97. Shipping is free w/ Walmart+ (free 30-day trial [walmart.com]) or on orders of $35+.