I need an AG1 battery, will this one work?

Yes, the 364 button battery is equivalent to the AG1.

does the 364 replace the sr621?

Yes, the 364 is a direct equivalent to an SR 621 and SR 621 SW.

This question is for the manufacturer. Can Duracell specify how long will it last once installed? I supposed they have tested it, so they should know.

That question is impossible to answer, even by the manufacturer. There are multiple factors that determine battery life. The most important is: What is the current drain of the device the battery is installed in?

Why does it say ‘ duracell – 319 1.5v silver oxide button battery’ but the battery i received was a 364?

That seems to be a typo by whoever wrote the ad copy.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Duracell 364 Silver Oxide Button Battery, 1 Count Pack, 364 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More

Duracell 364 Silver Oxide Button Battery, 1 Count Pack, 364 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More

Product ID: 275366618

Details

Battery cell composition
Silver Oxide
Brand
Duracell
Number of batteries
1 Lithium Ion
Recommended uses for product
Calculator
Unit count
1 Count

⌚Compatible with watches & medical devices

⏳4-year guaranteed shelf life

🔋1.5V long-lasting power

Description

🔋 Power your essentials with confidence—never miss a beat!

COMPACT POWERHOUSE - Slim, lightweight design packs maximum energy in minimal space.
READY WHEN YOU ARE - Guaranteed 4 years in storage—always fresh, always ready.
POWER THAT KEEPS YOU MOVING - Reliable 1.5V output fuels your essential devices without fail.
VERSATILITY MEETS PRECISION - Perfect fit for watches, medical devices, calculators, and more.
TRUSTED BRAND TRUSTED PERFORMANCE - Duracell’s #1 trusted battery brand ensures peace of mind.

The Duracell 364 Silver Oxide Button Battery delivers dependable 1.5V power tailored for precision devices like watches, medical instruments, and calculators. With a guaranteed 4-year shelf life and compatibility with multiple battery types (SR60, SR621W, 363), it ensures your critical gadgets stay powered when it matters most. Trusted globally, Duracell combines compact design with long-lasting performance for professionals who demand reliability.

Specifications

ASIN	B00006JPHB
Antenna Location	Calculator, Watch
Battery Cell Type	Silver Oxide
Battery Weight	0.15 Ounces
Brand	Duracell
Built-In Media	Duracell - 364
Compatible Phone Models	Watch
Customer Reviews	4.7 4.7 out of 5 stars (4,768)
Item Dimensions	6 x 44 x 89 millimeters
Item Type Name	Duracell D364BPK09 Silver Oxide Electronic Watch Battery, 364 Size, 1.55V, 18 mAh Capacity (Case of 6)
Item Weight	0.01 Pounds
Manufacturer	Duracell Distributing, Inc
Model Name	Watch battery
Model Number	D364BPK
Number of Batteries	1 Lithium Ion batteries required.
Reusability	Single Use
UPC	041333164090
Unit Count	1 Count
Voltage	1.5

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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