Watch batteries 626 and 364 are universal.
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sr626sw is common with AG4, 364. The Panasonic SR-626SW\/5BC is a button battery under the Panasonic brand, produced in Japan. Also known as button battery, refers to the size of the battery like a small button, generally speaking, the diameter is larger, the thickness is thinner relative to the columnar battery such as the market 5 AA battery button battery is divided from the shape of the battery, the same corresponding battery classification has columnar battery, square battery, shaped battery.
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Generally, there are two common charging and non-charging button batteries, including 3.6V rechargeable lithium-ion button battery (LIR series), 3V rechargeable lithium-ion button battery (ML or VL series); Non-rechargeable batteries include 3V lithium-manganese button batteries (CR series) and 1.5V alkaline zinc-manganese button batteries (LR and SR series).
Can be general AG4 is also called LR626, zinc-manganese button battery SR626SW is silver oxide button battery the same size, both are 6.8x2.6mm the voltage of the two slightly different, LR626 is 1.5V, SR626SW is 1.55VSR discharge stability better than LR hope to help you!