20W led track light flicker free is powerstar popular model, max 140lm/w with Citizen/luminus/Cree warranty for osram/philips/tridonic driver,powerstar led track lighting fixture all have good CRI80/90/97. Beam angle 24/38/60degree used for shopping mall,supermarket/musem/office/clothes store. also good UGR soft light to protect eyes.
