Panasonic Toughpad FZ-F1 - Manual (Page 11)

11 Safety Precautions (English)
For safety purposes, pull the plug when cleaning the
product or if you will not use it for extended periods.
Failure to do so may result in a fire or electric shock.
If the display is damaged, be careful of broken glass
or internal components that may become exposed.
Failure to do so can cause injury.
Take a 10–15 minute break every hour when using
the product.
Using the product continuously for extended periods
may cause strain injuries and may have detrimental
health effects on your eyes, hands, or other parts of your
body.