The VARTA V28PX 4SR44 Silver Oxide Battery (Pack of 1) is a high-performance, long-lasting battery designed for precision devices. This battery is ideal for watches, hearing aids, calculators, and other small electronics. Known for its reliable, consistent power, the VARTA V28PX ensures optimal performance, providing a longer lifespan than typical alkaline batteries. Perfect for high-drain devices requiring a steady energy supply, this silver oxide battery offers superior efficiency and durability, making it an essential power solution for your everyday needs.