The product is a pack of 10 Grey Pneumatic LR44 1.5V batteries, also known as A76, LR 44, AG13, and 357. These coin cell(button) batteries have the longest expiry date, making them ideal for use in a variety of electronic devices such as watches, hearing aids, key fobs, and potentially other sound and vision devices. The batteries are single use alkaline batteries with a diameter of 10.6-12.5mm, providing reliable power for your devices.
eBay