I was wondering what's the real duration of the battery.

Here on the diagram it's saying 30 days (which is awesome) - https://flipperzero.one/zero

But on the same diagram on kickstater it's saying 7 days only... -https://www.kickstarter.com/projects/flipper-devices/flipper...

I'm really into this device but the https://flipperzero.one/one looks so more promising and having a raspberry inside open a whole new world of possibilities, mainly on wifi.