The Maxell SR626SW battery is equivalent in size and function to the Energizer 377 battery, the Seiko SB-AW battery, and the Duracell D377 battery. These micro batteries, commonly referred to as button-cell batteries, power watches and small electronics such as calculators and health monitors.
These silver oxide batteries produce 1.55 volts per cell and operate on a low-drain type function. They are long-lasting batteries that are used in devices that require minimal power to operate. The Maxell SR626SW battery and its equivalents are 6.8 millimeters in diameter, 2.6 millimeters in height and weigh in at 0.4 grams per battery cell.