LumenStar® LED E27 bulb 11W - 1100lm, 5000K cool white, 180 ° viewing angle, replaced 100W - Livorno
In August 2012, I bought this lamp. In October 2014 after almost 5,000 operating hours, this lamp has "adjusted service" her. According to advertising statement of lamps manufacturer, these lamps are 20,000 to 25,000 operating hours, or 10 years