I bought something similar for my wife's car in greenhills last year for aroung P750 iirc. I noticed that even if I turn the knob at max, it seems to be a bit wobbly. I think she hardly uses it anymore as it blocks the screen of the headunit. She needs to see the headunit when waze is connected & shown there. btt: I also find the lcd of dashcam's monitor distracting if it's on, so I also just set it to auto off, & placed it at the back of the rearview mirror eversince.