The switching function is convenient when, for example, a group of people are watching 3D images and one person decides to take a break. When the switch is set to 2D, the images that you see with both eyes through the 3D Eyewear consist of the data for only a single eye's image. To watch 3D images again, you just flip the switch. This function gives you more flexible viewing options and ensures a comfortable viewing experience.
Sizing guide:
Measure head circumference at eyeline
Large Size: Panasonic TY-EW3D2LE Head Size 600mm
Medium Size: Panasonic TY-EW3D2ME Head Size 530-600mm
Small Size: Panasonic TY-EW3D2SE Head Size 480 - 530