The protective glass consists of 6 special layers and is the first of its kind to be only 0.4mm thick. However, there is no need to make any sacrifices in terms of hardness or UV resistance. In addition, there was no adhesive layer at all. Due to the adhesion forces between the display and the protective glass alone, the display protection glass holds securely to the camera display. It is literally sucked into the display and annoying bubble formation is a thing of the past. Batteries must not be disposed of with household waste. You are legally obliged to return used batteries so that proper disposal can be guaranteed. You can return old batteries to a municipal collection point or to a local retailer. You also have the option of returning old batteries from our products to us with suffic