SR 927 silver oxide (SR) and alkaline batteries (LR) are commonly used in watches, clocks, timers, calculators, laser pointers, toys, and LED "blinkies". Batteries that meet the IEC 60086-3 standards for watch batteries carry a "W" suffix. The functional differences between silver oxide and alkaline are:
SR927 batteries can be used to replace the following: SR927W, SR57, SR927, SB-BP/EP, 280-44, W, V399, D399, 613, GP399, 926E, 399, AG7, AG-7, LR927, GR927, SR927SW, CX926, 399X, 399A, SR57H, LR926, SB-BP, SR927PW, SR327W. All have dimensions of 9.5 mm diameter 2.73 mm height, and a capacity of 55 mAh.