How long will this battery work in a watch?

Not sure. Depends on the watch. They are so cheap I don't sweat it. My wife has collection of cheap "fashion" watches, so just buy various size batteries.

Can i just use the same size battery in my watch as this... I cant imagine habing 20 different battieries for watches

There are many different sizes of batteries. You must use the same # associated with the battery currently in your watch. If this battery is the same #, great. If not, don't use it.

Are these the same as LR920 1.5 volt?

Pretty sure they are, in fact these (SR920) are silver oxide instead of alkaline and should last longer. So yes, they will work and most likely last longer. 🙂👍

Hello, Please indicate expiration date of these batteries. Thanks.

i have not ordered or received sr920sw batteries. i received sr521sw with expiration date of 06-2013. my best guess i received these batteries app. 09-2103, about 3 months past the expiration date. i read a comment that indicated the batteries have no expiration date. my sr521sw's clearly has an exp. date of 06-2013.

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Maxell SR920SW Watch Battery Button Cell 371- Pack of 5 Batteries

Maxell SR920SW Watch Battery Button Cell 371- Pack of 5 Batteries

Product ID: 395617661

Details

Battery Capacity
3 Volts
Battery Cell Composition
Alkaline
Battery Weight
0.02 Kilograms
Brand
Maxell
Model Name
SR920SW
Net Quantity
5 Count

⚡1.55V stable power

⏱️Precision for watches

🇯🇵Made in Japan quality

Description

⏳ Power your moments with precision and reliability!

RELIABLE 1 55 V POWER BOOST - Ensures your watch runs smoothly with consistent voltage
PACK OF 5 FOR LONG TERM USE - Stay powered up without frequent replacements
TRUSTED JAPANESE CRAFTSMANSHIP - Decades of expertise packed into every cell
ECO CONSCIOUS ZERO MERCURY DESIGN - Safe, lead-free batteries for a cleaner planet
PRECISION ENGINEERED FOR TIMEKEEPERS - Optimized for quartz watches and delicate electronics

Maxell SR920SW is a premium silver oxide button cell battery delivering a stable 1.55V output, designed specifically for precision devices like quartz watches. Made in Japan with zero mercury and lead-free materials, this pack of 5 batteries offers long-lasting, eco-friendly power trusted by thousands of users worldwide.

Specifications

ASIN	B0014WUYMW
Amperage	1.55 Amps
Antenna Location	Watch
Battery Capacity	3 Volts
Battery Cell Type	Alkaline
Battery Weight	0.02 Kilograms
Brand Name	Maxell
Compatible Phone Models	Clocks
Customer Reviews	4.6 4.6 out of 5 stars (3,495)
Item Dimensions	15.2 x 1.3 x 7.6 Centimeters
Item Type Name	watch
Item Weight Unit of Measure	0.02 Pounds
Manufacturer	Maxell
Model Name	SR920SW
Model Number	371/920
Number of Batteries	5 Product Specific batteries required.
Reusability	Single Use
Unit Count	5 Count
Voltage	1.55 Volts

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