Ok, many thanks!

I see, have read some concerns about this. The moisture absorbing sachets are nice idea, but not self-saving while recording for several days, aren´t they? So I guess I cannot do it properly without waterproof hard case. And how are your experiences with condensation in these IPX7 cases under low temperatures? Thank you.

Hi Andy, thanks for your prompt reply! I hoped in this scenario, to avoid issues with the low temperature I already purchased lithium batteries but haven´t been sure with the device resistency. Happy to hear it! Best, Matyas