This bike holder has already made a solid impression during unpacking and has also confirmed this. While the quick release is very easy, but once mounted on the handlebars at first glance a little, it sits like a one. The shell for the smartphone fits as promised exactly for my Galaxy S2 and the closure fixed this very good at it. I have this bracket already undergone a first test: Cobblestone, bumpy dirt roads and uneven trails have neither the handlebar mount, yet the seat smartphones in shell beieinflusst. Only the adjustable position of the tray (step tuning, if the shell is horizontal or vertical) has occasionally shifted at times bumpy bensonders points to one or two positions. Conclusion: In my view, according to a worthwhile investment for that price anyway.