The Duracell 9V 4 Ah Coppertop Alkaline Batteries are a pack of 4 high-quality batteries designed for low drain devices. With a voltage of 9V and an amp hour of 4 Ah, these batteries are reliable and long-lasting. Made with alkaline chemical composition, these batteries are suitable for various consumer electronics applications. The Coppertop design ensures easy handling and storage, making them a convenient choice for everyday use.