3000K (two years of warranty) Oslang Light source+isolation driver, 4000k (two-year warranty) Osram light source + isolation driver, 6000K (two years of warranty) Oslang light source+isolation driver, 3000K (five years of warranty) Kerry light source+Igor driver, 4000K (five years of warranty) Korite Light Source+Igor Driver, 6000K (five years of warranty) Korite Light Source+Igor Driver