Casio F-91W purchased Mar-2016. Wristband was rubbish and broke in 1 year, replaced with nato style nylon band. Has been bashed against concrete, submerged in river. Will update in another 4 years
Modding my beloved Casio F91W strap | WatchUSeek Watch Forums
F91w Strap - Etsy
F91-W Fabric Strap Adapter and Protective Bezel - Etsy
Why I'll always keep this Casio Digital Sport Watch around
Amazon.com: Lijinlan Replacement Watch Band for Casio F-91W/F-105/F-84/F-94, Soft TPU Sport Strap for Casio F91W Series Watch Wristband (Black) : Clothing, Shoes & Jewelry
Original strap finally died, so replace with a nylon strap I had on another Casio. Only drew a little blood putting it on : r/F91Ws_on_NATOs
18mm Watch Band Replacement For Casio F91W F84 F105/108 A158/168 AE1200/1300 Watchbands Waterproof Silicone Strap _ - AliExpress Mobile