Casio Mens Digital Rubber Strap Watch-F-91WBA favorite for decades the slim, lightweight F 91 with digital LCD now with a minimalist face, fewer mode indicators, and more environmentally responsible materials. The band is made with bio based resin, a material expected to help reduce environmental impact. Complete with date day display, alarm, stopwatch and other handy functions, these watches are always at the ready. Case size (L W H) 38. 2 35. 2 8. 5 mm Weight 21 g Case and bezel material