Cool housing ,no heating ,soft lights with different colors choice ,energy saving ,1W energy consumption is up to 30 w . Part number:HG-CHG-4F and HG-CHG-4R15 Size:11*22mm and Dia.15mm.Light color :R/Y/G/P/B/W/RGB Voltage:12V ,24V ,110V ,127V and 220V and light space :2.77 and 3.33 and cuttable unit/(m):0.33,0.16,1,2 and wattage(w)/m:4.32,8.68,3.6,7.2 and 6.6.