Mounting brackets have moderate hardness and can be fixed firmly. The attached double sided tape is also powerful, I think that it will not peel off in normal use. As it is a radio clock, it is needless to say the accuracy of the watch, but under sunlight it seems like a shadow of liquid crystal and it is hard to see a bit. Also, since the button of the backlight is hard, when you press the button, you can not press it well unless you press the body while holding it. Overall, wiring is unnecessary, I am satisfied with a compact style with less worry of running out of batteries due to the combined use of batteries and solar.