Features:  30W LED Spotlight(4 wire), 2 wire/ 3 wire/ 4 wire are optional.  1) LEDs chip: Original CREE, CITIZEN and LUSTROUS COB LED,  2) Guide rail length can be customized, general is 1 meter one piece.  3) Housing: 6063 Aluminum Housing & 1070 Cold Forging Heatsink  4) Lifud driver non-dimmable with 5 years warranty, Triac Dimmable and 0-10V Dimmable driver with 3 years warranty.  5) AC200-240V or AC100-277V Voltage,  6) 80 LM/Watt, 90LM/WATT.  7) Exact CCT , 2700K, 3000K, 4000K, 5000K,Specification      Model LED Lumen Power Input Voltage (V) Beam Angle Size (mm) QD-CT0303-30D-4COB CITIZEN CLL032-1208A52400lm30WAC200-240V/AC100-277V10º/23ºφ90*L225Application installation FAQ  1. What maximum lumen per watt for your led track light?  We can meet 80-90LM per watt output.  2. Do your Qiled LED track light has agent in USA, AU, EU country?  No, we are seeking agent in the world.  3. How long do LED track light last?  LED track light will last between 35000 and 50000 hours, On average, halogen equivalents will last approximately 3000 hours.