Good: ++ Very bright, corresponding in my reading lamp more than 20W halogen. + Good warm light color, pretty close to halogen + Delivered quickly + Well packaged But: - No 4.5W. Because are measured at 12V 290mA only about 3.5W - Is * very * hot you burn your fingers. Conclusion: Because of the brightness sufficient by far I retain the lamp. But I'm afraid at the temperatures lives are not long.