Casio F91W vs. A158 Watch Review. What's the Difference?
I was unclear on the differences between the Casio F91W and A158. I bought one of each to compare in a hands-on review. Click to check it out.
Note
Curator's note
Okay, I am now fully involved in the Casio bubble, as I now own two Casio models.
The main reason for this is that I am really anticipating the upcoming Ollee watch shipment and thought that the A158 looks better. The main difference between the two models is the material. That’s all. Even the backlight is still shitty.
Beside that, if you don’t like the kind of cheap look of the F91W (well, it looks cheap because it is cheap), the A158 definitely scratches that itch.
Highlights
Both watches have 18mm lugs. The F91W secures its strap with a pin that must be pressed out, while the A158 uses traditional springbars
The choice really comes down to whether you prefer the appearance of metal or plastic. I would buy the A158 to wear for its versatility, or the F91W if you value low weight and plan to bang it up.
straphabit.com Created: March 13, 2026 Updated: March 16, 2026 article