The Maxell LR41 and equivalent models (SR41W, SR736, SB-B1, 280-13, K, V392, D392, 247D, S736E, AG3, AG-3, GP392, LR736, 392, 192, L736, G3, V3GA, LR41, SG3, ASG3, G3A) are reliable 1.5V alkaline button cell batteries designed for small electronic devices. They provide stable voltage, long-lasting power, and consistent performance for watches, calculators, toys, thermometers, glucometers, and other low-drain electronics. Ideal for both personal and professional applications.