386/301 (SR43S) Watch Batteries
The 381/301 button battery replaces both 301 and 381 watch batteries as well as these numbers: SR1142W, LR43, SR43W, RW44, D386, V386(548), 28041, SB-B8, SR1142SW, SR43, RW34, D301, V301(528), 28001, SB-A8. This is a high-capacity button cell with a large case, suitable for low or high drain applications.
The case size is 11.6mm in diameter and 4.2mm in height. These batteries are manufactured with silver oxide technology. Power supplied is 1.55V, with a capacity of approximately 120mAh.