I have a gametime watch and can't get the back off to change the battery. How do I do this?

Check the top around the crystal. Some of those watches came apart from the top of the watch. Generally a few screws to remove. If no screws then the back pops off. Not easy but it may be the way in.
Again, if it's a decent piece go to a jeweler to do the work. Should be under $10.00. to do it.

thank you, gabe.

ca nt get the back off dolce gabbna colorada watch

To reset the watch, you need to 'short' the reset point with the battery. To do this, with the watch face down and the back removed the 'Reset' point is in the bottom right hand corner (a gold-coloured contact point). Use a pair of metal tweezers or an unbent paper-clip (anything as long as it's metal and will touch the reset point and the back of the battery at the same time). Maintain contact for about 5 seconds and you should get the display back.
I've just changed the battery in my SDB 500W and the above method worked. I did lose the audible 'beep' though and I'm currently on the net trying to find how to get it back. That's how I found your question... :)

My GAMETIME watch has a back which just pops off. Once in the battery compartment, you will see plastic disk, with a molded frame. This just simply pulls off, and is not secured in place. You should not have to pry it.

Once this is removed, the battery is revealed. My model takes a SR626SW. To remove the cell, use something small to get under the exposed side. You should be able to pop the cell out without much force.

Before you replace the battery take this opportunity to clean the rim where the backing was. Carefully install the new cell, and replace the cover.

Try this link:

www.bigapplewatch.com/products.asp?id=champion-watches_180

Remove the back, take out the two screws on either side of the CR 2016 coin battery. Replace.

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Your watch is fitted with RONDA caliber 5040.D. Follow this link and learn everything to the smallest detail: http://www.ronda.ch/en/products/datasheet/5040.D.html Rate me, plz.

Depending on the age of the watch it could have a ECR series battery over the top of the 377 powering the movement or it could have 2 377's in the circuit board over 1 377 in the movement.

I always recommend taking Fossil watches to a certified repair shop that can re-seal the watch so you dont void your 12 year warranty and the watch remains water resistant and resistant to small particles.