Panasonic Xtreme Power Alkaline PP3 9V Size Batteries:

Panasonic Xtreme Power battery is one of the most powerful batteries in the Panasonic alkaline line up.

Features:

• Improved performance: up to 15% more music in a CD player.
• Convenient packaging (easy to open perforated opening strip easy to store ability to remove either 2 or 4 batteries easy to choose clear product information).
• Premium alkaline quality for high and medium drain appliances.
• Developed to provide reliable and dependable power.

Also known as - 1604AU, PP3, 6LR61, X22