The product is a pack of 2 Duracell CR1616 3V lithium coin cell batteries. These batteries are designed for high drain devices and are ideal for use in a variety of electronics such as toys, lighting, and digital devices. With a voltage of 3V and a lithium-based chemical composition, these coin cell batteries offer reliable power for extended periods of time. The Duracell brand ensures quality and long-lasting performance, making them a suitable choice for a range of applications.