Duracell special application batteries offer reliable, long-lasting power you've come to expect from Duracell. Duracell with DuraLock Power Preserve™ Technology. Guaranteed for 10 years in storage. High purity lithium. Triple corrosion protection IEC: CR2032 3.0 Volt. 220 mAh. The Duracell 2032 battery is designed for use in: Security devices, fitness devices, calculators, medical devices, watches, key fobs and more.