Features : Lithium (Li) - 3 V DC - 2 / Pack, Lithium 3.0 volt batteries are
designed for use in watches, calculators, PDAs, electronic organizers, garage
door openers, toys, games, door chimes, pet collars, LED lights, sporting
goods such as pedometers, calorie counters and stopwatches, and medical
devices such as digital thermometers and glucose monitors. The 2032 battery
does not contain mercury. It holds power for eight years in storage.