Reliable energy made possible with Energizer's innovative PowerSeal(TM) TechnologyUp to 5-year shelf life - so you'll always have power when you need it.Specs:Classification: AlkalineChemical System: Zinc-Manganese Dioxide (Zn/MnO2 )Designation: ANSI 1604A, IEC-6LF22 or 6LR61Nominal Voltage: 9.0 voltsOperating Temp: -18AdegC to 55AdegCTypical Weight: 45 grams Typical Volume: 21 cubic centimetersShelf Life: 5 years at 21AdegCTerminal: Miniature Snap