1. World's smallest ball energy saving lamp 2. The shell is PC( BAYER) it's safety. 3. Hg amalgam technology (tube) 4. Decorative color global R/Y/B/G/W/A 5. High energy saving and longer life 8000-12000H 6. Wattage: 3/5/7w 7. E27/E14 base, 36-45lm/w, size is L76/80*D45mm and the color temperture is 2700/4000/6500K