The 2 x Energizer CR1632 3V Lithium Coin Cell Battery is a long-lasting power solution for a variety of devices. With a high quality construction and a long expiry date, these batteries are ideal for use in high drain applications like fitness trackers, wireless earbuds, and other small electronics. The lithium chemical composition ensures reliable performance and durability, making them a dependable choice for everyday use. The coin/button cell design is easy to install and provides consistent power output, making them a convenient option for on-the-go use.