The product is a pack of 20 Grey Pneumatic LR44 1.5V batteries, designed for use in a variety of devices. These coin cell/button batteries have a long expiry date, making them suitable for a range of applications. The batteries are single use alkaline and have a chemical composition suitable for powering sound and vision devices. With a voltage of 1.5V and a battery size of 10.6-12.5mm, these LR44 batteries are reliable and durable for your power needs.