How to use:
·Step 1:You Can Fold The Fullja 20x50 High Power Binoculars Until It Is Suitable for Both Sides of The Eye.
·Step 2: Closing Your Right Eye and Rotate the Center Adjusting Knob Until The Left Eye Is Clear.
·Step 3: Closing Your Left Eye, Turn Right Eyepiece to Clear and Then You Can Open Your Two Eyes.