The Energizer LR54 189 LR1130 AG10 389 390 Batteries pack contains two long-lasting Alkaline coin/button cells with a voltage of 1.5V. Suitable for low drain devices, these batteries come with the longest expiry date, ensuring reliable power for a longer period of time. The Energizer brand is known for its quality and durability, making these batteries a practical and reliable choice for various sound and vision applications.