5 X Genuine Sony SR521SW 1.55V 379 Silver Oxide Watch Battery 1.5v Exp 2026. Condition is "New". Dispatched with Royal Mail 1st Class Letter.
The Sony 379 battery is a silver oxide button cell battery that is commonly used in watches. It has a diameter of 5.8mm and a height of 2.1mm1. The operating voltage of this battery is 1.55V1.
The Sony 379 battery has a number of features and benefits that make it an ideal choice for your watch. These include:
High energy density: The Sony 379 battery has a high energy density, which means it can provide long-lasting power for your watch.
Flat discharge curve: With a flat discharge curve, this battery can keep your watch operating correctly right up until the battery dies.
Leak-resistant design: The dynamic button cell configuration of the Sony 379 battery has been extensively tested to guarantee that it is leak resistant1.
Long lifespan: The Sony 379 battery has a long lifespan, which means you won’t need to replace it as often as other batteries.
High-quality construction: This battery is made by Sony, which is known for producing high-quality batteries that are reliable and long-lasting.
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