The perks of a silver oxide cell outweigh those of an alkaline button battery, as the Energizer 397/396 has a stable output voltage that lasts throughout the course of its service life, making it the perfect battery for low drain continuous use devices. This button cell also has a low self-discharge, so it will last for a long time. The Energizer 397/396 is perfect for small household devices like watches, calculators, and keyless remote entry systems for cars and homes. On the other hand, it is also an ideal replacement battery for many small medical electronics such as digital thermometers, glucometers, heart-rate monitors, and blood pressure cuffs.