Spectroline (R) MiniMAX (TM) Portable UV Hobbyist's Lamp Superior Design- Unique "shadow box" design blocks room light so materials glow brightly! Affordable- Competitively priced to offer the best value for your money. Versatile-Ideal for countless applications. The ONLY battery operated UV lamps with an AC adapter! Portable & Powerful-Spectroline (R) MiniMAX (TM) Series Lamps are compact and lightweight...take them anywhere. Convenient-All units feature sliding UV light shields for easy tube changing and slide open battery tray for quick battery replacement.