2 x Pack of 5 (10 CR2450R) The Pyronix BATT-CR2450R 3V Ion Button Cell Battery comes in a pack of 5, making it ideal for high-drain devices that require reliable power source. With a voltage of 3V and a battery size of CR2450, this battery is suitable for a variety of applications in the sound and vision sector. The lithium chemical composition ensures long-lasting performance, while the brand PYRONIX guarantees quality and reliability. Perfect for use in devices such as smart locks, remote controls, and small electronic devices that require a dependable power source.