Have tested in my living room lamp this lamp. She has compared to other G4 lamps a somewhat unusual design, but acts in the shade more elegant. The brightness and color temperature corresponds to my estimation of a normal halogen bulb G4 with 20 Watt. Although not classified as dimmable I could dimmed continuously. Whether this I can not say, however, has a negative effect in the life of the lamp according to the short time.
Overall, I can only give a positive overall assessment. Who puts on optics value and has enough space for the bulb, making sure no mistake here.
