Battery, AAAA, Premium, Capacity – Batteries 650 mAh, Standard Battery Series Max, Battery Chemistry Alkaline, Voltage – Batteries 1.5V DC, Standard Battery Pack Size 2, Max. Operating Temp. 130 Degrees F, Min. Operating Temp. 0 Degrees F, Shelf Life 5 yr, Standards ANSI-25A, IEC-LR8D425, Diameter 0.3 in, Height 1.6 in, Overall Height 1.7 in, Package Quantity 2