What are the operating temperature limits for the IQOS 3 DUO?
The IQOS 3 DUO should only be used in ambient temperatures between 0°C and 50°C. You should also avoid using, charging, or storing the device in places with high temperatures, such as inside a car in summer or near heat sources like radiators or fireplaces.
From the official Iqos 3 Duo Pocket Charger manual, page 11
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