P15D-30 LED Headlight. Operates from 6 to 30 volts non polarity. Works either positive ground or negative ground. Dual filament both low beam and high beam. Forward firing so all your light illuminates in front of you. Made with 1860 LED chip to illuminate your road. Available in White 6500K or Warm White 3000K. The diameter is approximately 1.06". The length is approximately 2.51". Since the bulb has a built in lens no need to reflect light off your fixture. Full brightness from 5.7 to 30 volts. This bulb is a non cancelable, no warranty, no returns bulb because the P15D-30 socket could be broken when inserted into old fixtures. Each bulb is tested before shipping. CE and Rohs.