Additional Details ------------------------------ Product description: Panasonic is a worldwide leader in small electronics batteries. Panasonic offers a full line of Watch Electronic Specialty Batteries for applications used in precision engineering tools to power a wide variety of small electronic devices. Compact but capable, the Panasonic CR2016 Lithium Coin Cell is the perfect power source for a wide range of electronics. Typically used in small, high performance devices like cameras, glucose meters, and alarm systems, this powerful battery delivers 3 Volts of impressive power and holds a sizable charge of 90 mAh. The CR2016 uses a potent Lithium Manganese Dioxide chemistry, which not only provides it with its impressive power, but gives it a remarkably long shelf life of 10 years, allowing it to be stored around the house until it's needed.