SR68 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:
SR68 batteries can be used to replace the following: SR916SW, SR68, SR916, SB-AJ/DJ, 280-45, WA, V373, GP373, 617, 373, D373, 373A, 373X, SB-AJ, E373. All have dimensions of 9.5 mm diameter 1.65 mm height, and a capacity of 29 mAh.