OVERVIEW EFM Zurich Flux for iPhone 13 is Compatible with Magsafe Case Armour in Clear now features latest in antimicrobial technology, and premium rare earth magnet array making this Zurich compatible with MagSafe and the ecosystem. This classic range also features a new and improved PC backplate that is sturdy, consists of recycled materials to reduce impact on the environment and wraps around the air pocket geometry bumper for additional protection.