The SteriPEN Journey LCD purifies water by using ultraviolet light to kill bacteria and protozoans, and it's fast! Purifies 16 ounces of water in just 48 seconds. The long-live UV lamp is rated for 8000 uses. If you purified four liters of water each and every day, your Journey LCD would last almost six years!
Specifications and Features:
Tapered end provides snug fit with most water bottles
LCD screen displays battery status and countdown timer to when water is safe to drink
Uses two CR123 batteries (included)