A LED G4 Bulb is a miniature bulb used in light fixtures with a bi-pin connection base. Although small in size, this 2.5-watt bulb packs huge energy savings in comparison to its 20-watt halogen equivalent. With a lifespan of up to 25,000 hours, this low-voltage lamp works well with both electronic and magnetic transformers. LED G4 bulbs feature an omnidirectional beam angle and are great for fixtures commonly used in landscape, accent, and decorative lighting.