The luminaire fits comfortably in your hand and the illumination of the 6 side-mounted LED's really good. As for the top LED, it is either very weak, compared to one of the lateral LED or the voltage regulator it is not enough voltage. Anyway, I have a flicker of the top LED of approximately 20 Hz. Strobe effect is in the vicinity of very disturbing. Will change and hope that the new lamp does not have this error the light.