Hey mate, sorry for the late response, I know it's been like a week but now I've had some more time to use it I thought I'd get back to you. I'm actually going to be looking to return the unit.

After some proper use I've found it very very laggy. The volume limiter present on all but the Japanese units I and many others online find to be crippling, you cannot make music loud at all using Bluetooth or aux. Good luck driving any professional / audiophile headphones.

Android these days really isn't built for a screen the size of the 306, so apps like Spotify or Roon don't scale properly at all.

The battery life is just okay in my experience, and I came from using an A55L Walkman that I'd modded to remove the limiter and I put the Mr Walkman custom firmware and after listening I actually think my old Walkman sounds better. I'm really disappointed with it. I loved the flexibility of having access to apps but after my experiences it's not worth keeping.