Replacement LED in clamshell.. Multi-Voltage 10 - 30 VDC (works with 12V and 24V). Replacements for popular G4, Bayonet and Festoon bulb base types.. High output SMD 5050 LED's (similar or brighter than comparable halogen or incandescent bulbs).. 60% plus more efficient (low amp draw).. Low temperature, cool to the touch.