This 373 Silver Oxide Button Cell Battery is 1.55 V and has a capacity of 26.5 mAh.
This battery is a replacement for Eveready 372, 373; Duracell D372, D373; Varta V373; RayoVac 373; Maxell/Toshiba SR916W, SR916SW; IEC SR68
These are replacement watch batteries and replacement small electronics batteries.