A Casio watch sporting a resin strap. It's water resistant enough for you to swim with.
From Amazon
CASIO G-SHOCK Casio GPR-H1000-1ER Quartz Digital Bio-Based Resin Unisex Watch
ELLA Juwelen
Casio Uhren - MASTER OF G RANGEMAN - GPR-H1000-1ER - schwarz
John Lewis & Partners
Casio Men's G-SHOCK Rangeman Solar Resin Strap Watch