... 3. Better performance with price attractive 3 Inch LED Down Light-Economic Version 1.Chip ... 50/60Hz 3.Color temperature :2700-6500K 4.Material:PC and pure pressed aluminum Feature: ... vibration resistant7. Imported light source ensure high brightness,8. External constant- current driver, stable performance.9. ... store, house, hotel, office, display window, exhibition ,halls and other commercial lighting.