e4u 3V CR2032 General Purpose Micro Lithium Coin Battery Cell - 10 Pieces The offered CR2032 Micro Lithium Coin Cell is widely used in medium power 3V operated devices (Ex. - Calculators, Watch etc.) as a source of power supply. Kindly note that this product is originally listed & brought for selling by "electronics_store4u" store which exclusively assure authenticity of the product.