W means the battery meets the International Electrotechnical Commission (IEC) standard for watch batteries.

SR621SW (Rayovac 364) Watch Battery SR621SW (Rayovac 364) Watch Battery

You can also use a micrometer to measure the inside of a battery cavity to find out which battery you need. Let them help you identify product alternatives, source additional technical data and find answers to your technical questions. The silver oxide version has the exact same dimensions but is referred to as SR60, SR621SW, SR621 or number 364 watch battery. For example, if you are looking for a watch battery replacement for your watch, and it was a Maxell SR626SW, you would scroll down the Maxell column until you found the part.PRO TIP: If you are having a hard time determining your battery, measure the width of the battery and then the height. Please complete the purchase (or remove the quote – don't worry it's still available in My Account) before adding these additional items. United Kingdom (Deutsch, English) (Nederlands, français, English) (Português) (Български) (English, français) (简体中文, English) (čeština, English) (dansk, English) (eesti keel) (suomi, English) (français, English) (Deutsch, English) (magyar, English) (English) (English) (Italiano,English) (한국어) (latviešu) (lietuvių k.

Long Life Watch Battery SR621SW, AG1, SR60, SR621 Renata 364 Extra-Long Life Watch Battery SR621SW, AG1, SR60,

The SR621SW watch battery, also known as 364 battery, SR60, SR621 or AG1 watch battery, is one of the most widely used watch batteries. With a average capacity of 12-15mAh these alkaline button batteries are mostly used for small electronics that require very tiny amounts of power and where constant voltage is not important.The watch battery cross reference chart or also know as the button battery cross reference chart is easy to use.

Battery Cross Reference | Chart Guide - BatteriesInAFlash Watch Battery Cross Reference | Chart Guide - BatteriesInAFlash

The alkaline batteries are not suitable for watch batteries even though they are much cheaper you should opt for silver oxide.