379 (SR521) Watch Batteries

The 379 button cell is a watch battery that directly replaces the 379, SR521, SR521SW, SR63, RW327, D379, V379(520), 28059, and SB-AC. It features a small footprint, and has a fairly low capacity. It is commonly used in small watches with few functions.

These cells utilize silver oxide chemistry. The case is 5.8mm in diameter and 2.1mm thick. Voltage supplied is 1.55V and the typical capacity is about 15mAh.

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  • Energizer 379 SR521SW Watch Battery | 1 Pack

    Energizer 379 SR521SW Watch Battery | 1 Pack


    Energizer 379 replacement watch batteries represent excellent quality and price over cheaper, lower quality alternatives. Replacing all SR512SW watch batteries, this silver oxide button cell is an ideal choice for you watch, to keep ticking and ticking...
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