Sony Alpha 7R IV Operating Instructions Manual page 772

Help Guide
Interchangeable Lens Digital Camera
ILCE-7RM4A
α7RIV
Using the battery charger abroad
You can use the battery charger (supplied) in any country or region where the power supply is within 100 V to 240 V AC
and 50 Hz/60 Hz.
Depending on the country/region, a converting plug adaptor may be needed to connect to a wall outlet (wall socket).
Consult a travel agency, etc., and prepare one in advance.
Note
Do not use an electronic voltage transformer as doing so may cause a malfunction.
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