Item Description Brand:PKCELL Model: CR2 Non-Rechargeable Li-MnO2 Battery Capacity:850mAh Volt: 3V Chemical Composition:Li-MnO2 Shelf Life:10 years (not printed on battery) Application: burglar alarm sensors, golf rangefinder, laser boresighter, tactical green laser sight, photo cameras, laser pointer, flashlights, light meters, and Mini 25/ mini 50/mini 50S/ Mini 55 pivi mp-100 & SP-1, other photo equipment's and so on.