Steripen ultra-violet lamp destroys over 99.9% of bacteria, viruses and protozoa Ultralight UV purifier quickly purifies 1.0L of water in only 90 secs Easy to use, one-button operation provides 8,000 treatments producing up to 8,000 L of purified water Compact, lightweight at only 2.6 oz Ultralight UV purifier can be recharged using its USB port