The WEST MARINE G4 Bi-Pin LED Premium Bulbuses cutting edge LED chips, drivers and construction offering the highest levels of performance, efficiency, and reliability. This results in dramatically reduced power consumption while having greater light output than the majority of bulbs of its size. It will produce bright flicker free light which will render true and vibrant colors, and reduce eyestrain compared to lower quality LED bulbs. This is achieved using high efficiency chips and drivers which produce more light output per watt of power consumed. This bulb replaces and has similar brightness to Mini/micro 10 and 15 watt traditional G4 bi-pin bulbs using the small/short globe. Cross reference #'s G4 T3 JC JC10 JC15. 11-14VDC input range. 270 max lumens, radiates in all directions. Commonly used in interior lights. Bright white. Dimmable. This is a high power LED and should not be used in tightly sealed fixtures not designed for high power bulbs. Note this bulb is polarity (+/-) sensitive, if it fails to light when inserted into the fixture, remove the bulb, rotate 180 degrees and re-insert.