A pack of four alkaline batteries with up to 100% extra life. Alkaline battery 4 pack Up to 100% longer life* Suitable for a range of devices Leakage prevention technology - superior nylon top closure Last up to 10 years in ambient storage Plastic free packet - made from recycled cardboard Size: AAA Pack of 4 *Longevity performance compared to the Minimum Average Duration of the 2015 IEC AA Digital Camera test. Results may vary by device or usage pattern. (www.iec.ch)