Duracell Specialty Alkaline batteries are designed to provide reliable power to specialty devices like car alarms, key fobs, GPS trackers, remote controls, & other electronics. They are guaranteed against defects in material & workmanship, so you can be confident these batteries will be ready when you need them. From storm season to the holidays, Duracell is the number one trusted battery brand. Battery Type: Alkaline; Battery Size: N; for Use With: Calculators; Home Medical Devices; Voltage: 1.5 V.