For indoor and outdoor installation on any non-metal surface (fiberglass, leather, PVC, fabric, wood, carbon fibre, etc.)SUB is designed to be covered with a material such as leather, fabric, or foam covering for a customised installation.Waterproof IPX6.Qi wireless charge technology (Apple, Samsung, Huawei, etc).The SUB charger features 3-coil technology that ensures a charging area over 80% larger than previous versions.This implementation is the best one for mobiles with very powerful camera phones (15 W output power).