1) Size 6LR61, alkaline (Zn-MnO2) battery 2) Nominal Voltage: 9V 3) 0.00% Mercury Added 4) Dimensions: 26.5 (L) x 17.5 (W) x 48.5 (H) mm 5) Metal/Foil Jacket 6) Shelf Life: 5 years Test Condition Cut-Off Duration 180Ω 24h/d 4.8v 900min 270Ω 1h/d 5.4v 12h 620Ω 2h/d 5.4v 33h