Alkaline Cell Batteries This listing is for 20 units of the 1.55v of AG2 or LR59batteries . You will receive 20 batteries in total (2 sheets of 10) Size of cell - 7.9 × 2.6mm (dia x height)
A watch battery, cell battery or button cell is a small single cell battery shaped as a squat cylinder typically 5 to 20 mm in diameter and 1 to 6 mm high—like a button on a garment, hence the name. Button cells are used to power small portable electronics devices such as wrist watches, pocket calculators, and hearing aids.
Manufacturers have their own part numbers for this type batteries including (they are all the same thing): AG2/SG2 LR59 196/396/397 please see my other listing for more batteries