Rigid loop LED festoon. 12V DC. 6 led watts, up to 450 lumen output, comparable to a 30 to 50 watt incandescent bulb. Great for classic cars such as 1971-73 ford mustang mach 1. Uses 2 CREE X2 3 watt leds. Once installed this light does very well to light up the dome light, interior, dashboard and door lights that use the rigid loop festoon. CRI>80, long life up to 30,000 hours.