Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms…

so you can be confident these batteries will be ready when you need them. They offer long-lasting power for your specialty devices.

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Duracell 21 Batteries: The 12V alkaline battery is designed for use in your specialty devices, including remote controls, car alarms, key fobs, and security systems.
Long Lasting Power: Duracell specialty alkaline batteries are engineered for long lasting performance.
Trusted Battery Brand: This Duracell 21 12V Specialty Alkaline Battery is equivalent to 8LR50, A23, and MN21.
Guaranteed for 5 years in Storage: Duracell 21 12V Specialty Alkaline batteries are guaranteed for 5 years in storage.