The Premium K&F Concept® Nano X MC UV filter was made of coated, optical branded real glass (18-layer nano multiple coating - reflection reduction, scratch-resistant, oil and water-repellent) and integrated into a precision aluminum frame. The selection of the manufacturing materials and the coating process was precisely coordinated in order to meet the highest requirements in terms of reflectivity, light transmission and visual appearance. Batteries must not be disposed of with household waste. You are legally obliged to return old batteries so that proper disposal can be guaranteed. You can hand in used batteries at a municipal collection point or at a local retailer. You also have the option of returning used batteries from our articles with sufficient postage or returning them free of