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Renata 2pcs/lot Silver Oxide Watch Battery 379 Sr521sw 521 1.55v Renata 521 Bottun Cell Batteries - Button Cell Batteries - AliExpress
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Exell Battery Silver-Oxide SR521 Button Batteries in the Coin & Button Batteries department at Lowes.com
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Amazon.com: Renata 379 SR521SW Batteries - 1.55V Silver Oxide 379 Watch Battery (2 Count) : Electronics
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