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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SR920SW Watch Battery Button Cell 371- Pack of 5 Batteries

Product ID: 6337290

Details

Battery Capacity
3 Volts
Battery Cell Composition
Silver Oxide
Brand
Maxell
Number of Batteries
5 Product
Recommended Uses For Product
Watch

⚡1.55V Nominal Voltage

🔒Leakage-resistant design

🕒Long-lasting stable discharge

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Description

⏳ Power your moments with Maxell’s precision-packed button cells!

VERSATILE COMPATIBILITY - Perfect for watches, health monitors, keyless remotes, and more.
ENGINEERED FOR STABILITY - Consistent discharge ensures your devices perform without interruption.
AUTHENTIC QUALITY ASSURANCE - Original hologram packaging guarantees genuine Maxell batteries made in Japan.
LEAKAGE RESISTANT DURABILITY - Advanced design protects your electronics from battery damage.
PRECISION POWER FOR YOUR TIMEPIECES - Reliable 1.55V output keeps your watches ticking flawlessly.

Maxell SR920SW is a pack of 5 high-quality silver oxide button cell batteries delivering a stable 1.55V output. Designed with leakage resistance and consistent discharge, these lightweight micro cells are ideal for watches, health devices, and small electronics. Packaged with original hologram seals, they ensure authentic, long-lasting power made in Japan.

Specifications

ASIN	B0014WUYMW
Amperage	1.55 Amps
Antenna Location	Watch
Battery Capacity	3 Volts
Battery Cell Type	Silver Oxide
Best Sellers Rank	#40,724 in Health & Household ( See Top 100 in Health & Household ) #235 in Coin & Button Cell Batteries
Brand	Maxell
Compatible Phone Models	Clocks
Customer Reviews	4.7 4.7 out of 5 stars (3,543)
Item Dimensions	6 x 0.5 x 3 inches
Item Weight	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	5.0 Count
Voltage	1.55 Volts

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