The product is a pack of 399 Sony 5PK 1.55V silver oxide coin/button cell batteries with an expiration date of 10/2030. These batteries are made in Japan and are ideal for various consumer electronics devices. Each unit contains 5 batteries with the size SR57, providing reliable power for a range of applications. With free shipping and tracking included, this purchase offers convenience and peace of mind for those in need of high-quality batteries for their devices.

The product is a set of 5 Sony 1.55V silver oxide coin/button cells with an expiration date of 12/2031. These batteries are ideal for consumer electronics and have a long shelf life due to their high quality construction. Made in Japan, they offer reliable power for various devices, making them a convenient and practical choice for everyday use. With free shipping and tracking included, this product provides great value for those in need of dependable batteries for their devices.