The 4x Energizer CR2025 3V Lithium Coin Cell Battery is a high-quality power source for a variety of devices. With a long expiry date and reliable lithium chemical composition, these batteries are ideal for use in sound and vision equipment. The coin cell/button design ensures easy installation and compatibility with a range of applications. This pack of four batteries from Energizer provides a consistent power supply for extended periods, making them an ideal choice for single use batteries.