answer 1
Most watch faces have a small ledge, or slot that provides leverage to open the case.
Cheap razor scrapers, such as the ones sold in hardware stores, work well for me. They have a small plastic snap case which houses a single edge razor blade.
Gently slide the razor blade under the slot in the case back. Once you have the blade under the ledge, slowly rotate the razor upward.
You may also have luck wiggling the razor underneath the case back. Gently lever the back off.
You should not have to use a lot of force. If it is too difficult to remove, stop. You don't want to scratch your watch. Try a different technique or visit a jeweler.
If the area where the slot is located does not provide enough leverage, try sliding the razor underneath the right hand side of the case back (the side opposite from the knob that you use to set the time). If you can fit the razor under the back, slowly lift the razor in a clock-wise direction. The back should lift up enough for you to remove it.
If you wish to use something more substantial to open the case, look for an item called a case knife. This is a knife made just for opening watches. The same technique applies.
Most watch faces take a SR626SW battery. This is a 377 battery. Two other popular sizes are SR621SW (364) and SR521SW (379). You can find these batteries at most drug stores.
To lift the battery out of the watch, use plastic tweezers. If you do not have plastic tweezers, metal tweezers work.
Metal is less preferable because there is a small chance that the metal could short out the watch. However, I often use metal tweezers and have never had a problem.
Placing the battery in the watch is relatively easy, but make sure that you do not bend back the little metal strip that sits underneath the battery. This is the contact. If you break it, you will have to either repair or replace the watch.
I hope this information is helpful to you!
answered 1 year, 3 months ago
answer 2
I was told to use a small screwdriver (the kind they use on eyeglasses) to open the back. Be careful not to scratch the watch face or backing, though.
answered 1 year, 9 months ago
answer 3
I didn't try but I would take it to a jeweler at the local Mall, if you have access to one. They have those very tiny instruments, which should help.
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answered 1 year, 11 months ago