it couldn't hold on to the mirror, dropped and broken

This terrible design to hold on to the existing mirror is so bad, how can you expect people to peel off the self adhesive tape and try to insert the unit to car's side mirror? The self adhesive tape is so sticky that you can put the unit in full depth and hold it in place. We can only push so far to about 1/2 of the depth, thus after driving for 2 days, the vibration of the car slowly drag off the unit and fall off, it was broken instantly. Good luck on buying this small mirrors. it works great on the account of field of view, so long if you can securely mounted in place.

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