Product Description Duracell's long-life specialty N alkaline batteries are a reliable choice for medical devices, security equipment and other electronic devices. Duralock technology maintains the power of the battery for up to 5 years in stored condition. Information regarding the return of batteries and electrical equipment:Information on the return and disposal of used batteries and electrical equipment can be found here. Specifications:Battery Type:alkalineBattery Design:LR1Technical Information:Voltage:1.5VDiameter:11.5 mmDepth:29 mmFeatures:special batterylong-lasting powerleak protectionManufacturer Number:MN9100 Technology:Duralock Most batteries slowly lose power over time, even when not in use. Duralock technology keeps unused lithium button cells fresh and charged for up to 5 years. So you can build up a supply of Duracell batteries without worries. Ordinary zinc-carbon batteries contain fewer active ingredients and lose energy over time because the chemical reactions take place constantly. Unlike zinc-carbon batteries, Duracell Duralock batteries are filled with a double amount of active ingredients that remain sealed in a unique durable construction. This prevents battery leakage and maintains battery performance much longer. Contents:2 x Duracell N/LR1/MN9100 batteries Manufacturer: Naumann Distribution GmbH Kopernikusstr. 17 50126 Bergheim Germany Info@Naumann-Distribution.com