Review on 10-Pack 2W G4 LED Bulb, Bi Pin Base, Milky Case AC/DC 12V Under Cabinet Light Warm White 3000K Halogen Bulb Replacement 20W by Chris Horton

I have no idea of how long they will last, but right now these are perfect. Virtually no heat compared to the Halogens they replace. They are very bright. I couldn't be happier with this purchase. They also run at approximately 120ma (123.8ma on the lamp I tested for current vs the lamp they replace at over 10 times the current @ 1.4 AMPS) They also run cool to the touch. I can't express my surprise and satisfaction. VERY VERY satisfied! oh and they are not polarized. Will work AC/DC (DC obviously without worrying how they are inserted in to the socket) I'd guess these run in the 2500 to 2700 Kelvin in "color temperature"