The 721 is the Creative classic model with interchangeable sunglasse lenses inspired from the 80's sports brands. Lenses can be changed to the optional mirrored lenses, just loosing the winding crown on the back of the bridge EYEVAN7285 new bridge/endpiece with EYEVAN original filigree 2 lens shape.
Comes with a special tanned leather case to put the optional lenses and screwdriver in.