Incandescent light provides enough illumination for the darkest trailers. Ideal for illuminating project work areas when used in conjunction with docking arm. Power Switch Yes, Watts 300, Bulbs qty. 0, Power Supply Electric, Bulb Type Par 4. Par 4, 300 watt flood light required Incandescent light Includes 18in. grounded 18/3 cord which plugs into electrical junction on docking arm On/off switch and metal guard Includes mounting hardware Bulb not included Docking arm not included U.S.A.