Bring your electronics to life with help from Energizer. These batteries are designed to work in electronic devices such as watches, calculators, keyless entry devices and more. Energizer batteries provide your electronics with a long-lasting, reliable source of power.The Energizer CR2016 delivers three volts of power to compatible electronic components. You can rely on Energizer for a long-lasting, consistent power supply. This pack contains two batteries, providing you with a high-quality back-up when you need it most.