I'm happy with the Product.
I still need to experience the efficiency atleast for two to three years. From Ptron (1 Product) to Boat (5 Products) and finally using UBON ClL-35 Bullet Series. I happy with extra detachable battery. And also two extra batteries attached to the box. But want to how to turn off the vibration. How to use the extra batteries attached to the box. Battery Backup is Good (3 days).