Thanks for sharing. I thought about an upgrade a while back but wasn't sure about size of the crystal. Very cool and practical mod 😍

Edit: Is the thickness of sapphire crystal (2.4 mm) identical to the original? Thanks

 

Thanks for sharing. I thought about an upgrade a while back but wasn't sure about size of the crystal. Very cool and practical mod ?

Edit: Is the thickness of sapphire crystal (2.4 mm) identical to the original? Thanks

The original is 2.24mm it's no problem the sapphire is a little thicker, the glass still sits below the bezel so it's still protected.

 

Another excellent mod to a sapphire crystal. Thanks for taking us thru the process. Enjoy your GA 2100 — I do love its grey and the sapphire crystal allows you to see more of the grey without being hindered by the glare from the light.

 

Love this. Found by googling as had same idea. Do you think the AR is worth it? What do you think a double dome might look like?

 

Thank you for this. Is there an O-Ring that comes out with the crystal? If so, Do you know of a similar watch/video that explains how to put it back in? I’ve been googling, but not sure what I’m looking for. Thank you for your time.

 

Also wanting to know about the o ring to try this on my GA 2000

 

in case the OP doesn't answer the question about the O ring,
I think he reused the O ring since the thickness of the crystals is the same

 

in case the OP doesn't answer the question about the O ring,
I think he reused the O ring since the thickness of the crystals is the same

OP didn't reply about the gasket is because the sapphire crystal is just a hair small and sits loose in the gasket. How I know this? Because I tried with same crystal on two of my GA-2100. None of them works.

So warning to other members, please don't try this mod. Toke me 10 minutes to find it out but still, waste of time.

 

I actually popped the crystal out of my 2100 to figure out its size before I found this thread. There is indeed an o-ring/gasket that will come out with the crystal.

I even purchased from the same place, Cousins UK. But I've got two crystals coming. One the same as the OP, another 1mm domed. If I can find a proper L-shaped crystal gasket, I might give it a go.

If the mod looks good, I might do the same to my GM-2100s.

 

Thanks, man @shiftf7
I just followed your instructions and did everything perfect. You saved my watches.
The reason for replacement wasn't a look changing. Actually, I scratched extremaly hard the original glass...
For everyone who asked about O-Ring - I used the original O-ring which is was around old glass. Its's fits on top of sapphire as OEM.
It was not simple to put the

FSBC240CMH 325 from Cousins UK, 2,4 mm thick with a diameter of 32,5

glass, but after couple of times I win.

 

Thanks, man @shiftf7
I just followed your instructions and did everything perfect. You saved my watches.
The reason for replacement wasn't a look changing. Actually, I scratched extremaly hard the original glass...
For everyone who asked about O-Ring - I used the original O-ring which is was around old glass. Its's fits on top of sapphire as OEM.
It was not simple to put the glass, but after couple of times I win.

View attachment 16358011

Can you tell me how to put back the glass back in the process?

 

Is it easier/harder to read the watch with the sapphire? I ask because I dig the watch and I don’t mind it stock, but I appreciate a good sapphire crystal yet find they tend to work better with indices that catch the light (unlike the ones on the GA-2100).

 

Lirerally it's exact the same feelings, but for quality - you getting 100x times more (really hard to scratch it) + more exclusive look with blue coating.

offtop:

Spoiler: I never expect I will ever google for this but I did:

2 PACK Watch Screen Protector 9H 2.5D Tempered Glass For Casio G-SHOCK GA-2100 | eBay

>>> > Picture Display <<<<. We will give you our best price. it may take up to 30. We will give you a satisfactory solution.

www.ebay.com

Tempered glass for watches. But right now after changing glass I will never think about it again

 

Thanks for posting the update L&W. Good to know.

 

I was looking into this and found a sapphire crystal supposedly for this model on AliExpress. It's a bit different sized, though. It's listed as 32.7mm by 2.7mm. A bit bigger in both directions than the OP. What's the actual original size? Is this one OK?

 

I may do this mod when I get bored with my CasiOaks, looks great.

 

hi, does anyone know if the glass for the ga2100 is the same as the gm2100?

hoping to do this mod for my gm2100 but can't find out the correct glass size

thanks

 

I would guess it is the same, but you need to measure the original crystal anyway to be 100%sure,
What I did was first remove the original crystal and measure it with a digital caliper, order a new one and put the disassembled watch away till the new crystal arrives and then put it back together.

 

I realize this is an old thread, but this is the one that comes up when you search for Casioak sapphire crystal. It's got some SEO traction. Anyway, just adding some info in case anybody comes across this thread.

The GA-B2100 has the same size crystal as the GA-2100. The stock crystal is 32.5mm x 2.3mm. I just searched eBay for "32.5mm sapphire crystal" and bought the thickest I could find at 3.0mm. That extra 0.7mm brings the surface of the crystal flush with the bezel, which looks fantastic. (I know part of the G-Shock design is a recessed crystal for protection. But I'm relatively easy on my watches and it's sapphire now.)

 

Can you recommend any videos or anything that shows how to do this step by step? I never done this before and dont' want to ruin the watch, but I think the anti glare sapphire crystal would make this watch look much better- I never liked the way the crystal in these G shocks create so much glare. Do you see a big improvement in the glare reduction?
regards

 

Love this look... Did the same and can really appreciate the upgraded crystal!

 

Wow are you serious? Any watch I have that has sapphire with the AR coating reflects light a lot less. The G-shocks reflect light like a hazy cloud where the face of the watch just looks like this cloudy white reflection... This isn't the case with the sapphire AR coated watches.. is it possible you have some sort of fake sapphire?

LOL no it's not fake. I got the same sapphire crystal from cousins UK. Just try it yourself.

I don't know if i want to waste the time and money trying this then. The whole intention for me was to cut down on the glare, nothing else.

 

Ignore that poster. I own a ProTrek which has AR coated sapphire and can confirm that the glare is a lot less as compared to mineral glass.

 

Good ar coated glass is going to be expensive. Like 180usd for single sided and 220+ for double sided.

it can be worth it, but it all depends on who or wherethe glass was coated.

 

That's right. This is just a budget sapphire crystal that is no better than the original mineral crystal.

 

well i bought a glass protector which said anti-reflective on it. Maybe it will work who knows. lol. It's worth a shot. I probably sound foolish but the glare on G-shocks always bugged me.. especially on the blacked out models. I have the same watch as shown but the solar powered version. Actually surprised the solar version of 1a1 isn't more popular. Maybe people don't like that sun burst look of the dial.. I think it looks cool.

 

Sunburst does not suit the blacked out aesthetic of the model.

 

I guess to each his own. Personally, I like the look of it better.. and having solar power on a watch like this is really the way to go for me because I use the light and timer A LOT.

 

bit of a silly question sorry, I have received the AR sapphire from Cousins and am struggling to see which side has the AR coating applied (as I want this to be internal) what is the best way of checking which side has the coating applied?

 

The AR side has more blueish hue in reflection than the none AR side.

 

Hi, I've struggled to get the crystal and gasket pressed in, it got mangled twice. Did you put the gasket on the crystal, then press - or put the gasket into the body, then press the crystal in? Thanks

 

Get the gasket seated in the case first. Then place the crystal in (on?) the case as level as you can and give it a little push with your fingers. Then use the crystal press. I use short, soft pushes and rotate the case between those pushes while checking that the crystal is seating straight and level as it goes in. Then give it some strong squeezes to make sure it's fully seated.