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Pull down the head strap on the back and turn the knob in the clockwise
direction to tighten the head strap for a comfortable fit.
Note: The knob must be tightened so that the VR headset will not shake
when the player moves his/her head; however, do not make it too
tight as it will cause discomfort around the player's eyes.
If the player's head is too large/small, the Velcro strap on top can be
opened up to adjust the length of the upper head strap so that the back
strap can be adjusted to wrap around the back of the player's head.