The OSTRONE-626 White Color AG-1/G1/626/621/LR60/LR621/LR620 is a high-performance alkaline button cell battery designed to power a wide range of small electronic devices. With its white exterior, this battery offers reliable energy output, making it an excellent choice for watches, calculators, key fobs, and other compact gadgets. Known for its long-lasting power and dependable performance, the OSTRONE-626 is a versatile solution that ensures your devices run smoothly and efficiently. (SR626SW is most often used as a watch battery replacement. Button battery cells can also be used in other electronic devices such as pagers, memory backup, security devices, and hand-held electronic devices.)