Extra 13 watt TrueColor tube for Ott-Lite battery-powered task lamp (6873). TrueColor light is easy on your eyes and perfect for color matching. Bring the power of natural daylight indoors! See details clearly, match colors accurately, reduce eyestrain caused by glare. See with superior clarity without the intense heat, excessive glare and harsh distortion of standard lighting. Please note, an additional shipping charge of $2.00 will be added to this item due to size and weight. For orders sent to Guam, Puerto Rico, Alaska, Hawaii and foreign countries we reserve the right to bill for actual shipping charges.