Duracell® Specialty Alkaline batteries are engineered for reliable, long lasting performance. They have a five-year guarantee in storage, so you can be confident these batteries will be ready when you need them. Designed for use in your specialty devices including remote controls, car alarms, security systems, and more. Battery Type: Alkaline; Battery Size: N; For Use With: Calculators; Home Medical Devices; Voltage: 1.5 V.