How do i get the case back off of a fossil jr8209 watch? It appears to be a screwback but doesnt turn at all.

yes, to 50 metres

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Rating: 4.5 - ‎50 reviews
Tang clasp. Water resistant at 50 meters / 165 feet. Casual watch style. Fossil Grant Chronograph Black Dial Brown Leather Mens Watch FS4813.

Grant Chronograph Brown Leather Watch - Fossil

https://www.fossil.com/us/.../grant-chronograph-brown-leather-watch-sku-fs4813p.ht... Rating: 4.6 - ‎91 reviews - ‎US$115.00 - ‎In stock
PRODUCT DETAILS. Collection: Grant. Movement Type: Quartz Chronograph. Case Size: 44mm. Strap Material: Genuine Leather. Water Resistant: 5 ATM ...

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Is the fossil fs4813 waterproof Google Search

Watch cases are opened with multiple size, strength, and thickness blades, or by a screwback tool.

Many modern watch cases that are "snap" cases are such a tight fit that I recommend you see a Certified Master Horologist who has a crystal press to make sure that the case goes back together properly. Also, if the watch is worn in water, you will want to make sure that it is pressure tested so that the movement is not ruined by exposure to the water.

Some cases now fit so tightly that special tool and mallet must be used with direct force to open the case.

I recommend Energizer batteries only, since I have never seen them leak in a movement.

I'd advise to go and see watchmaker. He/she will have proper tools and batteries to fit.

mcdevito75 here, Almost any jeweler should have another screw for the case back. You may even save a few bucks going to a small jeweler shop over one of the big concerns.

You can get instructions for your watch from the Fossil web site.

Go to "fossil.com", go to the bottom of the page and you will see a menu, click on "customer care", and then look under "Product Care" on the left and you will see "watch instructions"

Click on this and a list of diagrams and watch descriptions will appear,Download the file that is suitable for your watch.

The short answer is no.
You might find a specialty shop that would have a replacement but my experience has been that you will need to get a replacement band or case from Fossil . You will end up paying for this because Fossil's warranty doesnt cover cosmetic damage.

If this is screwback, then there should be grooves for inserting case opener claws. For this yoy need case opener with interchangeable claws. You can buy it on ebay for approx. £7.00.
If the casebask is snap-on, then there shouldn't be any grooves, just small opening (lip) between the caseback and case. This is exact point where the watchmakers knife blade must be inserted and pryed up.
Do not forget to rate, please.

good morning ! to remove the case back of your fossil watch,just snap the case back use the knife to do that ! but if your fossil watch is waterfroof design you need to use the wrench opener for treaded watch case back ! good luck ! god bless !...

good morning ! if your watch is waterfroop design that`s have a tread so if you want to open the case back you need a wrench or opener, but if your watch is snop in design you need a knife to open the case back,and change the battery,thank you,

to change the battery of fossil blue watch,just open the case back and remove the old battery,look the number size on the battery and put a new battery that same number size ,after replacing battery press the case back tight to avoid water damage !good luck