Product safety
NOTICE
Only use zinc-air batteries or nickel-metal hydride
(NiMH) rechargeable batteries.
For example, do not use silver-zinc or lithium-ion
rechargeable batteries.
NOTICE
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NOTICE
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NOTICE
Different types of strong radiation, e. g. during
X-ray or MRI head examinations, may damage
devices.
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Protect your devices from extreme heat. Do not
expose them to direct sunlight.
Do not dry your devices in the microwave oven.
Do not use the devices during these or similar
procedures.
Weaker radiation, e. g. from radio equipment
or airport security, does not damage the
devices.