Steripen brings you the revolutionary SteriPEN Journey LCD which uses universal symbols to take the guesswork out of the water purification process. The Journey is ideal for the outdoor adventure or to have in the car for "Road Trips". Journey’s integrated LCD screen displays the user’s dose selection (1/2 liter or 1 liter), battery status and countdown timer. The LCD screen also tracks the number of uses and signals when lamp usage approaches its life limit. Specifications: - Speed: 48 seconds for 0.5 L (16 oz.) - Light (128g /4.5 oz.) - Effective, and even easier with it’s innovative LCD screen. - Includes two non-rechargeable (disposable) CR123 batteries and case. - Bulb life: 8,000 uses