SR65 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:
SR65 batteries can be used to replace the following: SR616SW, SR65, SR616, SB-AF/DF, 280-73, DA, V321 , D321, GP321, 611, 321, SR618, 321A, 321X, SB-AF, E321. All have dimensions of 6.8 mm diameter 1.65 mm height, and a capacity of 14.5 mAh.