Light Source Included Dim To Warm Technology Allows Led Lights To Dim Down To A Warmer Color Temperature, Replicating The Effect Of Incandescent And Halogen Light Bulbs Lumen: 320 Kelvin: 2200 K 3000 K. Note: Only Certain ‘Leading Edge’ Dimmers Are Suitable For This Lamp. We Recommend And Have Tested The Following Types: Niko 310 01900, Niko 310 0280, Jung 100 494 70 S, Peha 00 260623, Tronix 215 131, Eltako Eud61 Npn Uc.