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.