Energy saving lamps 1) voltage: 220v, 50hz; 110v, 60hz. 2) power: 5w, 7w, 9w, 11w, 13w, 200w, 250w, 285w 3) lamp base: e14, e27, b22, e39, e40 4) color temperature: 2700k, 3500k, 4200k, 6400k 4) life span: 8000hrs It can replace the traditional outdoor lighting, such as mercury lamp, sodium lamp, metal halogen lamp. Not only to Improve the lighting environment well, but also to save energy and maintain cost. High power factor, no effect to Main voltage. Matched with electronicballast, ficker free, noise free, instant start. Pbt materials, high shining efficiency, over 8000 hours service life and can save electricity, be suitablefor outdoor lighting and indoor lighting. Applications : factory, square, shopping, center, front yard, station, public areas, hotels and marketplace.