1.Tri-phosphor fluorescent, more than 55lm/W, 100V~200V wide voltage range, 50Hz or 60Hz 2.conserve 80% energy 3.CE , RoHS Article name: Half Spiral Energy Saving Lamp Power: 5W, 7W, 9W, 11W, 13W, 15W, 18W, 20W, 23W, 26W Diameter of Tube: 7mm, 9mm, 12mm Input voltage: 100V-230V Frequency: 50Hz/60HzColor temperature: 2700K-6500K CRI: Ra≥82 Lumen: 55 -60lm/W Average lifetime: ≥8000h Base type: E14, ...