Silver Oxide Battery 389/390 1.5V Compact Size

⚡ Accurate and constant power. Especially suitable for watches, calculators, insulin pumps, digital thermometers and other medical devices that require stable and safe performance. Duralock Power Preserve Technology. With the Duralock system, this battery can hold its charge for up to 3 years in storage, ensuring it is ready for use when you need it most. Versatile and compatible. Equivalent to SR66, SR626W and SR626SW models, making it an ideal choice for replacing other silver oxide batteries without worrying about compatibility. Ideal for specialized devices. Its compact design and durable power make it perfect for delicate and precision equipment, offering reliability without compromising safety of use.