Patent DIWL Lens, anti-glare,110-120lm/w, Epistar chip, lighting efficiency >0.9; ... PF>0.95, 24/38/60 beam angle,nondimmable Anti-glare&dimmable led ceiling light:1. Features:* Copper PCB board* COB Leds ... most dimmers in market;* Patent DIWLTM Lens, Fly-eye Design, Anti-glare, care for eyes, * High Lighting efficiency: >0.9, CRI ...