FENIX® has opaque and anti-fingerprint surface.
No special maintenance of the surface is required: just a damp cloth with warm water and a household degreaser. Almost all regular household cleaning products or disinfectants can be safely used.
Besides that, thermal healing of superficial scratches is possible. All you need is a hot iron, towel and water.
Take a look at a video how to repair superficial micro-scratches on FENIX® surface:
More information about cleaning and maintenance can be found here.