The product is a pack of 16 Duracell hearing aid batteries size 312 with a best before date of 12/2028. These batteries are designed for behind the ear (BTE) hearing aids and are digital sound processing. They come in an orange color and are suitable for adults and unisex kids. The batteries are replaceable and have a lifetime manufacturer warranty. Made in Germany, they have a CE certificate and are a reliable choice for maintaining your hearing aid’s power source.