3 COLOR SELECTABLE: Possibility of selecting color temperature for each track light:3000k warm white, 4000k neutral white, 5000K day light SUPER BRIGHT AND 10%-100% DIMMABLE: 4 Pack 20W COB Track Lighting, 36° beam angle, 2,000 Lumen real output for each(100w equivalent), much brighter than others, and it can smoothly dim from 10% to 100% with TRIAC dimmer FLICKER-FREE, No Buzz, CRI 90+: Eyes protective and showing the true color of the object with excellent color rendition, VANoopee Track Lighting is ideal for accent lighting, especially for commercial lighting, shop windows, home, room, kitchen...etc EASY TO INSTALL: Compatible with existing single circuit H type track lighting systems, You can adjust multiple angles, up and down or right and left, to fit the environment 3 YEARS WARANTY: Solid aluminum body with excellent heat dissipation, last to 40,000 hours lifespan. Any problems with your track lights, pls feel free to contact us, we'll respond to you ASAP VANoopee 3-Color 20W H Track Lighting Heads Dimmable No Flicker Bright LED Track Lighting Fixtures for Accent Task Retail Kitchen Ceiling Track Light Halo Type Pack of 4 - CRI90+ 36° 2000lm White