The product is a 2-pack of 9V square block zinc-carbon batteries by the brand EVEREADY. These batteries have a long expiry date, making them ideal for use in smoke alarms. The batteries are 9V in voltage and come in a 2-pack, making them suitable for various devices requiring a 9V block battery. With the manufacturer warranty for the longest expiry, these batteries offer reliable power for extended periods, ensuring your devices are always ready to function.
