Introducing the Chateau Button Cell Batteries, the reliable and long-lasting power source for your small electronic devices. These high-quality batteries are perfect for use in watches, calculators, and other small gadgets that require a dependable power supply. With a shelf life of up to 5 years, you can rest assured knowing that you'll have a reliable backup power source on hand when you need it most. The Chateau Button Cell Batteries are also mercury-free, making them an eco-friendly choice for your battery needs. Never be caught without power again with these top-of-the-line button cell batteries from Chateau.