Its luxurious finish makes it the perfect match to any smartphone or tablet. The adhesive is strong, so it can not only be used as a drop prevention ring, but also attach the main unit to hook a variety of items. Just slip your finger through the ring for a stable grip. It also increases the operating range of the screen. 360 degree rotation and 180 degree swing freely, so you can adjust the ring to your preferred viewing angle for easy holding and viewing. Even if the suction strength weakens, you can use it repeatedly with water. Removable for long lasting use.