Sceptre Technologies E420, SCEPTRE E420 LED 3D HDTV user manual - page 8

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SCEPTRE E420 LED HDTV User Manual
Do not use the 3D Active Glasses for any other purpose than for which it was designed.
Wearing the 3D Active Glasses for any other purpose (as general spectacles,
sunglasses, protective goggles, etc.) may physically harm you or weaken your eyesight.
Immersive video can potentially have adverse effects on the user including motion
sickness, perceptual after effects, disorientation, eye strain, and decreased postural
stability. Take frequent breaks to lessen the potential of these effects, as is commonly
suggested for other items, such as keyboards and computer monitors, that you may
tend to fixate or concentrate on. If your eyes show signs of fatigue or dryness or if you
have any of the above symptoms, immediately discontinue use of this device and do not
resume using it for at least thirty minutes after the symptoms have subsided.
The ideal viewing distance should be three times or more the height of the screen. We
recommend sitting with viewer’s eyes on a level with the screen