The product is a 3 pack of 8 AAA 1.5V E-Circuit Super Heavy Duty Batteries and 1 pack of 8 AA batteries for a total of 4. These batteries are single-use and designed for various consumer electronics devices that require reliable power sources. The brand is E-Circuit, known for producing high-quality batteries. The AA/AAA batteries have a voltage of 1.5V, making them suitable for a wide range of devices that require power to function properly.