Typical Battery Life For Leopold FC650MDS BT

I’m interested in buying the Leopold FC650MDS BT, as I heard that it has great build quality, and DIP switches to allow me to customize my keyboard’s behavior.

Does anyone know what the battery life on this keyboard is? There are rumors on Reddit that claim it’s 2 weeks, and some say it can last up to 1 month.

I had a look at their official page (which was in Korean), and I could not understand it. I don’t think battery life is mentioned there anyways (sorry that I can’t include the link; this forum won’t let me do it).

It would be great if someone who owns this keyboard could let me know from experience what the battery life on this device is!