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