half spiral energy saving lamp:9W, 11W, 13W, 15W; T3(9-10mm), 110-230V, 2700K/4000K/6500K, 8000H high quality. half spiral energy saving lamp:Power: 9W, 11W, 13W, 15Wtube ... with high luminous efficiency, and the light distribution is very equalSaves up to 80% energy cost Packing:1pc/box, blisterOuter packing ... system. We have CE&EMC, RoHS and ISO9001 certifications. half spiral energy saving lamp