Want to change 377 battery in Embassy Men's Watch but don't know if back snaps off or screws off......seems like it should be more obvious than this. Can anyone help?

https://watchgnome.com/2016/12/guess-watch-battery-size-guide-sizing/#:~:text=What%20Size%20Battery%20Do%20Guess,SR920SW%20or%20SR626SW%20watch%20batteries.

"Guess Watches Usually Take 377 or 371 Batteries"

377 batteries have many equivalents that can be cheaply purchased and tested to see if they work or not.

https://www.battery-house.co.uk/377_button_cell_battery

Hi Jason,
About 70 percent of watches take 377 batteries but there is no way to know until you pop the back off. If you take a picture of the back i can instruct you how to get it off. thank you ! Lisa

there are two types of back /snap on and screw on this link below will help you
,,,,,,,,,,,,,
http://www.watch-batteries.com/Changing_a_battery.htm

You will need a very small (watch or glasses) Philips head screwdriver, and a SR626SW (or know as a 377) watch battery.
Remove screw 1 to remove the motorcycle back cover.
Remove the other 2 screws to take off the clock backing.
Remove the white plastic ring by pulling directly up.
Remove the battery.
Put the new battery in.
Press the white plastic ring back on.
Reassemble the clock backing with the two screws.
Reassemble the back of the motorcycle with screw 1.

You may have two batteries, there are watches with a lithium battery and a not so obvious silver oxide cell underneath. I don't know what watch you have so I cannot tell you for sure if this is the case

The vast majority of Fossil analog wristwatches take either a #377 or #379 watch battery. The #379, being slightly smaller, is somewhat more commonly found in women's watches than in men's watches, but I have seen both types used in men's and women's watches alike. However, the Fossil CH2473 includes chronograph functions, which means that you can have multiple motors inside the watch running simultaneously. As a result, it's possible that this watch will require a different / bigger bigger. However, if it's not one of these batteries, or even if it takes a 3-volt lithium battery instead of a 1.5 volt watch battery, it will still be something pretty mundane.

In general, common batteries like the type I expect you'll find inside your watch are commonly found at many drug stores, jewelry store counters at places like Walmart and Target, and even at some dollar stores. Be aware that cheap dollar store batteries are usually alkaline, not silver oxide, versions of the same size battery. Alkaline batteries may work perfectly well in many watches, but they have a somewhat different energy performance curve over time, and, in general, they won't last quite as long as a comparable silver oxide battery. In addition, for reasons I've never been able to figure out, some of the Fossil watches that I've serviced would not function with an alkaline battery--but would work fine when I put in a silver oxide battery of the same size and voltage. I have not been able to see a pattern to predict when this will and will not occur. Lithium batteries, whether "brand name" or generic, should have the same performance curve.

If you do open up your watch to change the battery and don't recognize the battery type/code on your battery, don't give up. Watch batteries have different numbering schemes, depending on the manufacturer. Here's a link to a cross-reference chart that will help you "translate" one code into another. I would suggest starting by looking at the #377 line to see if one of those cross-reference codes matches what you have. However, you may need to look around the chart to get an exact match:

http://www.watchbatteries.com/custom.aspx,,id,,75

As a final thought, the backs of some Fossil watches are very snugly fitted to their cases. You can generally get them off without too much of a problem, but there's a good chance you may need a jeweler's press to get them to snap back on properly. I've noticed this most with round watch backs; I generally haven't needed a press to close oblong or tonneau-shaped Fossil watches (or some round watches, too). A jeweler's press spreads the pressure evenly around the edges of the watch back and watch case, preventing damaging pressure on the watch crystal, watch movement, and watch back. Clamping the watch in a regular vise to try to press on the back runs a high risk of damaging your watch, and I do not recommend trying that, no matter how frustrated you get. It's much safer (and cheaper, overall) to tip someone with a vise a couple of dollars to close up your watch for you.

The vast majority of Fossil analog wristwatches take either a #377 or #379 watch battery. The #379, being slightly smaller, is somewhat more commonly found in women's watches than in men's watches, but I have seen both types used in men's and women's watches alike.
These batteries are commonly found at many drug stores, jewelry store counters at places like Walmart and Target, and even at some dollar stores. Be aware that cheap dollar store batteries are usually alkaline, not silver oxide, versions of the same size battery. Alkaline batteries may work perfectly well in many watches, but they have a somewhat different energy performance curve over time, and, in general, they won't last quite as long as a comparable silver oxide battery. In addition, for reasons I've never been able to figure out, some of the Fossil watches that I've serviced would not function with an alkaline battery--but would work fine when I put in a silver oxide battery of the same size and voltage. I have not been able to see a pattern to predict when this will and will not occur.
As a final thought, the backs of some Fossil watches are very snugly fitted to their cases. You can generally get them off without too much of a problem, but there's a good chance you may need a jeweler's press to get them to snap back on properly. I've noticed this most with round watch backs; I generally haven't needed a press to close oblong or tonneau-shaped Fossil watches (or some round watches, too). A jeweler's press spreads the pressure evenly around the edges of the watch back and watch case, preventing damaging pressure on the watch crystal, watch movement, and watch back. Clamping the watch in a regular vise to try to press on the back runs a high risk of damaging your watch, and I do not recommend trying that, no matter how frustrated you get. It's much safer (and cheaper, overall) to tip someone with a vise a couple of dollars to close up your watch for you.

its the norm for fossils to have 2 batterys one for the hand function and one for the back display. it depends on year or what movement is fitted.you will have a 3v battery for back display and under it there maybe a smaller cell 1.5 .it could be a 2016 or even2025 3voltand a 364 or 377 small cell but you wont know untill the backs off the watch and remember you need it resealing to make sure its water resistant after its been repaired this needs to be done by fossil or a good watch repair service like Intime watch services uk..you have to AC the movement as well to make sure all functions work it needs to be done by a trained tech..

I presume that a 377 battery is the same number as what came out. Sometimes there is a small piece of metal that is a strap that helps hold the batter in. Usually, then there is a very small screw that you have to loosen to remove the plate or just move it a bit to get the battery in. Be sure that the battery is not upside down from the way that the original was placed in. Also when putting in a new battery be sure that you don't use metal tweezers to hold the battery as it will short the battery and discharge it. Use your fingers or plastic tweezers.

That's usally about all there is to it. With the screws out, the back comes off. No prying is necessary unless the watch strap is in the way. Nice thing about Timex is that they generally stamp the number of the battery on the back - 1216 or 377 most often. Both are very easy to come by.