Features2 x AAAA batteries1.5 VAlkalineDependable power for a variety of devicesPack of 2The Energizer Alkaline AAAA Batteries provide long-lasting power for everyday devices. A long shelf life means these alkaline batteries will be ready when you need them. They are designed for your everyday electronic devices e.g. Glucose meters, keyless entry, headsets, Bluetooth devices, LED penlights and many more.Long lasting 1.5V alkaline battery batteries for everyday use. Wide operating temperature range -18C to 55C.