Most SWATCH Wrist Watches have batteries that can easily be changed by the average person.  In fact, that's how they were designed!  Here is a general guide to selecting the correct Battery  for your SWATCH.  Don't worry too much about letters in front of battery numbers.  They used to matter more, but most companies have gone to "multi-drain" batteries and it no longer matters as much.

There are two ways to locate your battery number: The back cover of your watch or the battery itself. I have a table below to help you.

Installation: As an extra service, I include a FREE illustrated and written guide to battery installation for Swatch as well as virtually ALL types of watches when you purchase your new ENERGIZER batteries from my store, Watchinghour

Lastly, be sure to recycle your old Watch Batteries and dispose of properly.

Here is a chart of SWATCH Styles, Battery Numbers, and Swatch Watch Covers
Model                                    Battery*    Swatch Cover
Skin Std                                 317         QSK
Skin Beat                                373        QSKB
Irony Mid,Pop, and Steel
  Ladies                                   329         QLC
Irony Beat Midsize                  350         QBEM
SkinChrono                             376         QSKC
Turnover,Irony Lady,Square    377         QILC
Irony Scuba 200Chrono            380       QIAC
Access Gent,Steel Gent,Xlg      390         QGC
Scuba                                      390         QSC
Aquachrono                             394         QAC
Chrono                                     394       QCC
Irony Big/Scuba                        394       QIBC
Irony Chrono                            394       QICC
Irony Chrono mid                     397       QICC
Irony Mid New                        397       QIMC
Beat Irony, Beat Plastic          1632       QBE (Lithium coin battery)
Irony Synchro Beat                1632        QBE
*Some companies also use alternate battery numbers to these. For example, Battery 390 is also known as SR1130SW or 189.  Future guides will have more battery information on conversion as well as information for other popular wrist watch bands.