Omron PocketTens Instruction Manual page 6

NEVER APPLY THE PADS TO THESE BODY AREAS:
The head, the mouth, or any area
of the face.
The neck or any area of the throat
because this could cause severe
muscle spasms resulting in closure of
the airway, difficulty in breathing, or
adverse effects on heart rhythm or
blood pressure.
Near the heart, or on genital area.
IMPORTANT SAFETY PRECAUTIONS AND WARNINGS
Both sides of the thorax
simultaneously (lateral or front and
back), or across your chest because
the introduction of electrical current
may cause rhythm disturbances
which could be lethal.
On the calves of both legs at the
same time because this may cause
cardiac disturbance.
On the soles of both feet at the
same time because this may cause
cardiac disturbance.
Open wounds or rashes or over swollen,
red, infected or inflamed areas or skin
eruptions (such as varicose veins, phlebitis,
thrombophlebitis and thrombosis), or on top
of or close to cancerous lesions, or over areas
of skin that lack normal sensation.
DO NOT USE THIS UNIT DURING THESE
ACTIVITIES
5
When in the bath or shower;
While sleeping;
While driving, operating machinery,
or during any activity in which electrical
stimulation can put you at risk of injury.