The windows mount portion is designed great. It holds well, but definitely reattach it if you leave it mounted and it's a warm/high exterior temperature for any extended period of time. The suction cup area is a sticky compound that can be cleaned with light soap and warm water.
The phone mount section is a great design also. It holds my iPhone in a 'Ballistic' brand protective case with a rubber shock sleeve perfectly. It can also be charged while mounted.
The biggest problem is the connection point between the base and the phone mount. Being plastic the vibration from travel over the 6 months of use weakened this point and broke. I super glued the contact point with very minimal success. My next step will be to mount a metal screw through the base into the ball and that will eliminate the problem.
I just wish these steps would be addressed with the design pre-production.
