Sprout ' Tyvek' Quartz Resin and Cloth Casual Watch, Color:Grey (Model: ST/7002GYGY) 42mm grey corn resin case with engraved bezel and yellow aluminum crown Grey tree bark dial with yellow tipped, silver-tone index markers at all hours; Day date and 24 hour function subdials Luminous filled silver-tone hour and minute hands; Yellow second hand sweep Smooth, glossy grey strap made from recycled plastics; Corn resin buckle closure Not water resistant