The WEST MARINE MR16 Vertical Pin Downlight G4 Base LED Bulbhas been designed as a replacement and upgrade for standard halogen, Xenon and incandescent filament bulbs, offering dramatically lower power consumption and heat generation, while having much greater lifetime and shock resistance. For even greater light output and quality as well as higher efficiency (more light per watt) please look to our Premium series bulbs. This bulb replaces and has similar brightness to 5 & 7.5 watt MR16 bulbs. 10-16VDC input range. 135 max lumens, downwards. Dimmable from 7.5-10 volts. Bright warm white.