Sprout Men's ST/3600BKBKOL Water Resistant Multi-Function Dial Olive Green Tyvek Strap Bio-Degradable Watch 45 mm black corn resin case with engraved arabic numeral markers on bezel; red aluminum crown Olive green tyvek strap, padded with matching stitching and black corn resin buckle closure Black dyed genuine bamboo dial with silver-tone hour indexes, luminous hour and minute hand tips, red stick second hand and grey subdials Subdial functions include day, date and 24 hour time Water resistant to 165 feet (50 M): suitable for swimming and showering