A nice Casio watch which comes with resin strap. There's no problem with showering or swimming with it on.
Amazon
Casio Men's Year-Round Quartz Watch with Rubber Strap, Green, 30 (Model: GWG-100-1A3ER)
WatchShop
Mens Casio 'G-Shock Mudmaster' Black and Green Plastic/Resin Solar Chronograph Radio-Controlled Watch