Compact, battery-powered lamp, with soft, bright, daylight illumination. Far whiter than regular lamps, you will see and match colors more accurately. Also, makes printed words and patterns stand out with contrast and clarity which greatly reduces eyestrain. Clips onto most anything or use freestanding, with adjustable lamp head and folds compact for easy storage. Minitub lasts up to 10,000 hours. Powered by four AA batteries and used 36352 car adaptor or 36371 AC adapter.