DURACELL MN21 Battery

Duracell Specialty alkaline MN21 batteries - long-lasting Thanks to Duralock Power Preserve technology, you can store Duracell Specialty batteries for 5 years, so you can be sure that these alkaline batteries will be charged when you need them. They are designed for use in electronics (bike computers, scales, alarm clocks, electronic organizers), security (bank card reader), medical devices (glucose meters, heart rate monitors), fitness equipment (pedometer) and lighting.