Three stars because of the following drawbacks:
1. The finish of the product is crude. It (the finish) is worthy of selling in petty shops, not on Amazon
2. The clamp that purports to go around the rear-view mirror mounting assembly of a car is not big enough for all the cars - my car (Kushaq) has a mirror holder assembly that is larger than the size of the largest width of the clamp when it is open.
3. The freedom of movement on the arms is by steps (ratchet based) and not infinitely adjustable (friction fit). This *MAY* leave the user to view the phone in an inappropriate angle.
Overall - it may work for cars which have slender rear-view-mirror mounting assembly. It will not work for all cars. The marketing is also misleading, and beware of the fact that it may not work for your car.
Tip - check if your car rear view mount assembly is less than 28 millimeters in diameter (or width) at a point close to the mounting point of the mirror (the "neck" of the mounting assembly). If it is, then, this holder would work for you. If it is NOT, do not buy this holder.