The AquaStar Plus water purifier is a UV-C portable spectracidal treatment appropriate for use in all climates and settings. Using a pair of international standard CR-123 batteries, the AquaStar can safely and quickly treat a liter of water in 80 seconds. A White LED built into the inside of the lid allows the whole bottle to be used as a lantern. Lightweight, rugged and simple to operate. 3V Li-lon charger is not included.