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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🔋 Power your precision life with Maxell’s tiny titan!

LONG LASTING VOLTAGE - Stable 1.55V output ensures your gadgets never miss a beat
PRECISION POWER BOOST - Delivers consistent 0.5 Ampere output for reliable device performance
MICRO SIZE MEGA IMPACT - Slim 2.2mm height and 6.8mm diameter fit seamlessly into compact electronics
VERSATILE COMPATIBILITY - Perfect for watches, health monitors, keyless remotes, and more—stay powered everywhere
TRUSTED SILVER OXIDE CHEMISTRY - Premium battery chemistry for superior energy density and leak resistance

Maxell SR920/371 Silver Oxide Batteries deliver a reliable 0.5 Ampere current at 1.55V in an ultra-compact 6.8mm diameter form factor. Engineered in Japan with premium silver oxide chemistry, these button cells are ideal for precision devices like watches, health monitors, and keyless remotes, ensuring long-lasting, leak-resistant power for your essential electronics.

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Manufacturer	Maxell
Part Number	371
Item Weight	0.32 ounces
Product Dimensions	6 x 0.5 x 3 inches
Item model number	371/920
Batteries	5 Product Specific batteries required.
Is Discontinued By Manufacturer	No
Color	Multicolor
Voltage	1.55 Volts
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No
Battery Cell Type	Silver Oxide

Maxell SR920/371 0.5 Ampere Silver Oxide Batteries - 100 Pack

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