First the positive: The processing is very solid, the included compact container looks good and is quite handy if you want to read when traveling. The light beam of the lightweight device is light enough to offer night-blind people like me enough light to read. Alone: Availing's doing me nothing. The clip is in fact uniquely designed for glasses with thin metal frame. Who like me a stronger Kunstoffbrille (the brackets are about 4mm thick) which is able to do anything with the design, it just will not hold. Too bad.