This energy efficient 3 Watt UV LED Blacklight Spot-Flood Light Bulb uses only 3 Watts of power. Screws into your standard E27 Edison base light socket. Utilizes 3 x 1 Watt High Powered UV LED Bulb. Estimated UV Wavelength~ 395-405 nm. Includes: 1 x 3W LED UV Bulb 1 x 18" Flexible Goosneck Adapter 1 x Bulb Stand LEDs: 3 x 1-Watt High Power UV LED per Bulb Bulb Dimensions: 2 7/8" x 2" (dia) 1.9 oz 110V AC - Non-Dimmable Maximum 75 degree Celsius operating temperature Not for use in totally enclosed fixtures. Range: Max effective distance 5-8 ft. Actual results will vary. We do not recommend this light for illuminating invisible blacklight reactive paints. Some invisible colors will not react at all while others may color shift. Keep in mind the closer you are to the UV light source the better the effect will be.UltraViolet Distributing