SilverCrest SAT90 Guide De Démarrage Rapide page 21

If you notice smoke or unusual noise or odour, switch the product off
immediately. If this happens during charging, disconnect the product
immediately from the USB port.
Sudden temperature changes may cause condensation inside the
product. In this case, allow the product to acclimate for some time before
using it again to prevent short circuits!
Do not operate the product near heat sources, e.g. radiators or other
devices emitting heat!
m WARNING!
During operation or charging, do not cover the product. Otherwise the
product might heat up.
m WARNING! Radio interference
Never wear the product on airplanes, in hospitals, service rooms, or near
medical electronic systems. The wireless signals transmitted could impact
the functionality of sensitive electronics.
Keep the product at least 20 cm from pacemakers or implantable
cardioverter defibrillators, as the electromagnetic radiation may impair
the functionality of pacemakers.
The radio waves transmitted could cause interference in hearing aids.
Do not place the product near flammable gasses or potentially explosive
areas (e.g. paint shops) with the wireless components on, as the radio
waves emitted can cause explosions and fire.
The range of the radio waves varies by environmental conditions. In the
event of wireless data transmission, unauthorised third parties receiving
the data cannot be excluded.
The OWIM GmbH & Co KG is not responsible for interference with
radios or televisions due to unauthorised modification of the product.
The OWIM GmbH & Co KG further assumes no liability for using
or replacing components not distributed by OWIM. The user of the
product is fully responsible for correcting interference caused by such
unauthorised modification of the product, as well as replacement of such
components.
GB/IE 21