F91-W

The Casio F91-W is an icon. Slim, lightweight, and instantly recognizable, it's also one of the best canvases for a custom Casio mod. JellyLab's F91-W collection takes this classic and reimagines it with upgraded straps, custom dials, unique color combinations, and careful finishing work that transforms a humble $20 watch into something genuinely special. These custom F91-W builds are perfect for everyday wear, gifting, or adding something unexpected to your watch rotation. Each one is assembled by hand in Houston and ships ready to wear. If you've been looking for a modified Casio F91-W that's been built with real craft and intention, this is it. Browse the collection below and find the build that speaks to you.