| 1. Opetional wattage: 20w2. Opetional voltage/frequency: 110 to 130v or 220 to 240v, 50Hz3. Optional color temperature: Yellow/Blue/Green/Red/Daylight/Warmwhite4. Optional base: E27/B225. Average life: 6000hrs/8000hrs/10000hrs available.6. Optional packaging: Blister/Color box/Color box+PET available.7. Certificate of the system of quality certification: CE/ROHS/EMC/ISO9001/GS etc. | 
