Replaced battery in my Burberry watch, back cover won't snap on

Most watches have one of three types of rear cover. Push On, Screw On and Screw Down. The easiest way to tell is to look closely at the actual back cover. The batteries in some watches are held down with a spring loaded cover you unclip to access the
battery.
A totally smooth back cover suggests a Push On type. On the edge there should be a groove or a notch. Use a thin edged tool to lever off the cover with a firm but gently action. Once you have replaced the battery the cover should push on and click once in place.
If it has regular notches or dimples around the edge of the cover the whole cover will need to be unscrewed, the 'Screw On' type. The whole cover needs to turn like a bolt head. This often needs a specialist tool to do it.
The last type is a rear plate held down with four tiny screws. This is normally most common on 'Sport' watches.

That means you have to change watch battery, as it is coming to the end of life (EOL).

I have seen other burberry watches and the back should pop out .
1- Locate a very small tab or recessed area on the edge of the back cover 2- Pull out the stem, which releases the back on some watches.3- Get a small flathead screwdriver it needs to be a thin inflexible tip 3- Very carefully slide the blade under the tiny metal protrusion on the back cover (or across the length of the recessed area, depending on which type of cover your watch has). 4- When you replace the cover, make sure you line up the stem slot on the cover with the stem of the watch. This information is on wiki: http://www.wikihow.com/Pry-off-a-Watch-Backing-Without-Proper-Tools

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I used a four inch "C" clamp and a large washer about diameter of back, to get my Timex back snapped back on. Place the watch face side down on a flat surface cushioning the crystal with soft rubbery material like shelf liner or anti skid material used under rugs (the kind used to also line tool chest drawers - black). Place the washer between the watch back plate and the "C" clamp screw plate. Align the back plate of the Timex as evenly on watch as possible while gradually tightening the "C" clamp. Keep turning down the "C" clamp ever so slowly until you hear the plate snap back on.

Yes, the battery for this watch can be replaced. Timex estimates that the battery should last 2-3 years, but that assumes an "average" use of the Indiglo backlight. If you never use the backlight or audible alarms, your batteries would have lasted longer; heavy use of both would have run the battery down more quickly.
If you want to replace the watch battery yourself, you'll need a very fine philips or flathead screwdriver, the new battery, and a bit of patience. It would also be helpful to have a pair of tweezers, but that's not absolutely necessary. If you carefully look on the back of your watch, Timex usually lists the battery type so that you can buy a replacement battery without first opening the watch. If you can't figure out what the numbers mean, take it to a jewelry counter at Target or Walmart, and they should be able to help you decipher it. I don't know which battery this specific watch takes, but many Timex watches use a #1620 or #2016 3v battery. Look for a number like that on your watch back.
To open up the back of the watch, open the strap so that you have good access to the back. If you have a steel band, you might need to slip out one of the adjustment pins to separate the band into halves. Yes, you might be able to take the back off without this step, but it makes it a lot easier.
Place the watch face down onto a soft surface. I like to use a dark towel, so that if I drop one one of the tiny screws you'll be dealing with in a minute, they won't bounce and you can easily find them again.
Use your screwdriver to loose the back of the watch, one screw at a time. I find it very helpful to loosen a screw, then use the tweezers to pick it up out of the hole. These guys are tough to grab with your fingers! Put the screw in a safe place, then carefully remove the back of the watch. A little black neoprene gasket may be stuck to the back or be floating around--don't lose that!
You should be able to see where the battery is kept. On most Timex watches, there's a metal shield covering the watch and completing the power circuit. Using your screwdriver, gently pry the tabs of this shield away from the watch movement, one tab at a time. Try very hard not to snap off any of the little plastic anchors. On a Casio watch I recently serviced, I had to remove the movement from the watch to get at these little tabs; I don't remember ever having to do that with a Timex.
Once the shield is loose or removed, the battery should slide right out. Replace the battery, and gently snap down the metal shield. Turn the watch over to check whether it's working again. If it's not, you may have to push a little "reset" pin on the watch movement to clear the registries. The back of the metal shield usually has instructions on where that little pin is located. If the watch is already working, you won't need to do this.
Closing up the watch is the reverse of what you did to get it open. Make sure the neoprene gasket is back in place--that's what's keeping sweat and water out of the watch--and carefully set the cover back in place. Tighten the screws in an "X" pattern--i.e., top left, then bottom right, then bottom left, then top right. I get all the screws loosely screwed in before tightening them down in earnest. This watch has a plastic case, so you want to tighten the screws snugly, but not over-tighten them so that they strip out the screw hole.

Try a very small dab of a very light lubrican on the sealing edges.

If you haven't already tried it, press the edge of the watch back using two fingers and move them appart until they meet again.

Season with a lot of parience... good luck!

I had the same problem. The thing that was most frustrating is that I have a standard tool to remove and install screw in watch backs, but Timex in its infintie wisdom, decided to make this model withta snap-in back.

I tired usinga a set of adjustable locking pliers with rubber claw covers. I tried holding one side with finger and thumb while using the pliers on the other to no avail.

robatbath's answer about jewelers having a special press led me to a solution. I just happened to have (2) 1.25" steel washers with 1/4 inch holes. I placed one on the face and one on the back. This way I could use the locking pliers (with rubber covers on) to press in the center of each side. The back snapped in fine. You can get washers and pliers at any hardware store.

You will need a special tool to pop it back on. Any other way will result in the crystal breaking.