This model has a renewed version of hinge inspired by the zipper part of MA-1 (Military wear)
manufactured in the 1960s which is an iconic part of EYEVAN 7285.
The new military hinge has a high-specification in terms of manufacturing where overlapped parts are matched in semicylinder-shape. In addition, the intensity was brushed up using a square washer which is a reinforced part on the front side.