Designed for use on continuous low drain. Replaces LR41, 192, 384, SR41SW/W; Duracell D392, Energizer 392, Goldpeak 392, Maxell SR41W, Panasonic SP392, Rayovac 392, Renata 392, Sony SR41W, Timex K, Toshiba SR41W, and Varta V392. 7.9mm diameter x 3.6mm height. 41 MAH to 1.3 volt. 1.55 volt, carded.