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:
Other names for this battery include AG12/SG12, LR43, L1142, 186/301/386, and 6135-99-547-0573 (NSN)(S). All have dimensions of 11.6 mm diameter and 4.2 mm height. The alkaline varieties have mAh from 110-150 and the silver oxide varieties have mAh of 170-200.