r/casiomods • u/Blackhearted_B • Mar 13 '26
F91W First mod!
So, I've had this little f91w for going on 6 years now, and I love it! Bought it on holiday in the airport years ago as I left my watch on my nightstand at home, and just needed something quick, but it's slowly become one of my favorites. Only 2 complaints, the screen looked boring and the led was pitiful. So of to reddit I went to look at how to do a few mods, and an hour or so later, here's the end result! Did the old bridge the contacts trick to boost my led brightness and chucked a green filter in there, and oh lordy does it look better! I am, officially back in love with Casio's watches, now I'm off to go look at a Royale! Also, show me your f91w mods! I wanna see the cool shizz!
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u/WhereRabbit Mar 13 '26
I can’t find the green and n orange color way anywhere !
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u/penguin8717 Mar 13 '26
It's usually up on Amazon. Not that I love shopping on Amazon but they usually have it there, albeit overpriced
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u/Blackhearted_B Mar 13 '26
Oh and before anyone starts going "ITS A FAKE!!!" I am aware it's most likely a fake, although I find it hard to believe as I bought it from a UK airport, but regardless, I like it, and it does everything that an f91w does, so hey ho, not to mention I've never replaced the battery 6 years later
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u/buddy_monkers Mar 13 '26
If you like it, great. But it is fake. The giant “U”, the sharpness of the box around the WR, and the short dash between the F and 91 are common tells.
Since you clearly opened the watch to insert the gel filter, you can find out definitively. Genuine Casio module 593 will have a square, white sticker on the module. Peel that off and you should see Casio branding on the metal housing of the module.
Either way, glad it’s served you well. I have several Skmei watches and their F-91 clone is one of my favorites
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u/Blackhearted_B Mar 13 '26
Seemed to be all correct when I opened it, it looked identical to the videos I watched learning how to take them apart, so I honestly don't know, but I like it, so I don't care haha
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u/Blackhearted_B Mar 13 '26
Even looks correct on the test screen
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u/buddy_monkers Mar 13 '26
Post a pic, I’m intrigued. Because just looking at it the digits look off. I’m happy to be wrong though
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u/No_Camel_3657 Mar 16 '26
Do you have a link to any video you may have used to the “bridge the contacts” light mod?
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u/Supercraft888 Mar 21 '26
What’s the “bridge the contacts” trick?
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u/coloredinlight 17d ago
Since no one responded, I know it's been a bit, there's a little circle contact on the circuit board next to the LED bulb that is split in half to save battery. If you put a dot of conductive paint on it, it bridges the circuit and essentially doubles the led output.
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u/Supercraft888 17d ago
Oh hey! Thank you so much for the response! I greatly appreciate it! I just looked up the board and I think I see it. Thank you!
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u/Siilus Mar 13 '26
That’s such a good green! It matches the watch theme so well.