From basic calculators to the most sophisticated wearables, some devices require a reliable power source with a form factor small enough to be embedded in them, yet powerful enough to last over extended periods. ZOLTA specialty batteries are ideal for use in such devices. Small, yet packed with power for reliable performance over a long period. Long lasting power storage with a shelf life of up to 5 years. Dependable power source for all kinds of small electronic devices. Recommended for heart rate monitors, thermometers, calculators, watches, car remotes.