Low consumption・ high brightness.Energy-saving and environmentally friendly・ is conducive to recycling. Low heat generating・ no UV or IR light radiation. Seismic・ impact resistance・ non-thermal radiation・ safe and stable・ reliable Suitable for home・ office and exhibition lighting. Very low heat generating・ besides saving light power. Intelligent IC Control Power・ It has a long lifespan・ no hazardous materials. Instant start・ no flashing. Solid・ tate・ shockproof. Save power more than ordinary bulbs. What is segmented dimmer (three segments)? 2. When you use ordinary switch・ please press 3 times. First・ get One hundred percent brightness; Second・ get Fifty percent brightness; Third・ get Twenty-five percent brightness; 2. You Can use a Dimmer switch to adjustable the brightness