Specification:7W,9W/50HZ
Base:GU10,E26-27,E14
Color of back cover :white,black,transparent
Color temperature of the tube:2700K,4100K,6400K
Luminous flux:250-300lm/7W,270-320lm/9W
Light effect:20-25lm/w
Color rendering index:70-80 Ra
Power parameter:240V 120V Current:50mA±5/7W,80mA±5/9W
Power factor:60%±5
Life time:under the following factor
1)Environment temperature+ 40oC ~ -40oC
2)Environment humidity ≤ 65 %
3)Input voltage:≯nominal voltage
4)Continuous service:≯ 20 hrs/day
5)Service life:5000hrs
6)Special design of the spiral bulbs