For this price a good article.
My Nokia 5230 fits loosely into and can be using
the supplied foam parts well fixed in the shell.
In rain, the phone was protected.
Initially, the attachment seems a bit clunky, but you get used to
quickly.
The integrated battery pack is really a super idea!
Depending on your phone you but still requires separate adapter if necessary.
(-)
The handlebar clamp is thought clever and makes
a high impression. But the part to which the shell
plugs, looks a bit fragile.
Here time will tell how stable is the plastic.
Unfortunately, the holder rotates together with the pocket
when driving on uneven slopes, small potholes rich as this.
But if you in addition a thin wide elastic inserts in the mounting ring,
the problem should also be no more.
CONCLUSION:
For that price I see in the light of the functions (rain gear, battery)
no alternatives.
I've Thanks to this support from the app ViewRanger on my Nokia 5230
already allow pilots across the terrain, a 50 km biking tour.