Sziols X-KROSS KEY SYSTEM
in any location, in one second through the patented X-KROSS key system.
Step 1: lens in front of the frame, key is vertical.
Step 2: press the lens onto the frame, the key is vertical, briefly press the key
Step 3: The key is turned to the right to secure the lens
Step 4: The key is turned to the left to remove the lens
Step 5: Position the key vertically and remove the lens from the frame