"This Designer's Edge Dusk to Dawn Floodlight has a light-sensing photocell that automatically turns the light on at sundown and off at sunup. Twin 13 Watt bulbs create the same amount of light as a 120 Watt incandescent bulb. Overall Dimensions L x W x H in. 7 1/4 x 8 1/2 x 4 2/3, Bulb Type Incandescent, Color Bronze, UL Listed Yes, Volts 110, Indoor/Outdoor Use Outdoor, Temperature Range F -20, Watts 26, Light Output Lumens 1,650. Acrylic prismatic lens Electronic ballast works down to -20F UL and CUL listed"