This listing is for 12 AA Energizer Industrial Alkaline Batteries with a voltage of 1.5V. The batteries come in 3 boxes of 4, for a total of 12 batteries. They have an expiration date of 12/2033 and are manufactured in Singapore. The brand of the batteries is Energizer and they are of the AA size/type. These batteries can be used for a variety of products, as they are multipurpose and single use.