The whole thing sits then bombproof on the upper arm, several km runs it could not bring calm.
I look on it only rarely, because it is easier for me to use the GearFit for the usual commands and messages: start / stop / pause the run, music playback, even to answer calls.
The smartphone remains absolutely dry, the shell must not be dried in the fresh desire, on the heating.
A little tip: The first time the shell hung too low, so that a friction in the elbow arose.
All in all a very convenient cover for those who could not live without while running on his smartphone.