The product is a set of 4 CR2 lithium batteries with a capacity of 800mAh each, designed for low drain devices such as camera flashes and toys. These batteries come in a white and blue color and are bundled with a case box for convenient storage. The batteries have a manufacturer warranty of 2 years and are ideal for applications requiring reliable power supply. With an expiration date of 2034, these single-use batteries offer long-lasting performance for various electronics.