The Panasonic Pro Power 9V Alkaline Battery is a high-quality single unit designed for use in high drain devices such as sound and vision equipment. With a voltage of 9V, this battery is reliable and long-lasting, making it ideal for a range of applications. The alkaline chemical composition ensures consistent power delivery, making it a trusted choice for both professional and personal use. With the trusted Panasonic brand name, you can be confident in the performance and durability of this 9V battery.