These lithium coin batteries are commonly used in watches, though they are not as widely used as several other styles. They are single-use, non-rechargeable battery with a nominal output of 3V.
The typical capacity of a 2320 cell is from 110 t0 170mAh, making them a suitable power source for watches with added functions, such as calendars and calculators. The battery case is 23mm in diameter with a thickness of 2mm. These batteries are very lightweight and have a relatively long shelf life, as is typical with lithium-based chemistry.