194 LED Super White Twin Pack. LED's (Light Emitting Diodes) have an estimated life span of 100,000 hours. LED Bulbs use a fraction of the energy that a halogen bulb does while producing brighter more efficient and longer lasting light. Replaces:194 T10 T-10 147 152 158 159 161 168 184 192 193 194 #194 259 280 285 447 464 555 558 585 655 656 657 1250 1251 1252 2450 2652 2921 2825 12256 12961 2521 2525 W5W.