When you need potable water on the go, turn to the SteriPEN Ultra Water Purifier to ensure safe drinking water in just 48 seconds. Simply place the pen in your water and press the button. Its UV lamp eliminates over 99.9% of bacteria, viruses and protozoa that cause water-borne illness and lasts for up to 8,000 treatments. OLED display indicates treatment and battery status. Includes rechargeable lithium-ion battery that can be recharged by outlet, computer or solar panel and will treat up to 100 half liters or up to 50 full liters of water when fully charged. Water Quality Associations Gold Seal certified. 7.3L x 1.6W x 1.3H. Wt: 4.9 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Purifiers.