OVERVIEW EFM Aspen D3O Case Armour iPhone 13 Pro Max is integrated with patented D3O with 5G Signal Plus Technology, the only material to meet the industry 5G permittivity standard. It is proven to limit 5G signal loss by 37 percent compared to any other case material in market, giving your device optimum 5G signal, crystal clear audio and video, faster download speeds, prolonged battery life and best in class impact protection. The latest ion-exchange technology incorporated into the case...