I find it at the price not too bad part, but really a China. the on and off is any adhesive still been inside that I have gekletzelt with a screwdriver out, it is also not so easy as to use, or to turn up, made sloppy easy. Whatever he lets on and turn off. a description is missing, I took a long time until I found the transmitter. And I still have to say, he is really tiny, and for this size he makes all right loud! at the price and the Chinese, you can only expect something, therefore a price for the ok from me. I got him to me from another seller also ordered'm curious if the on and off as well as bonded, or hard going.
