A:AnswerHello Mehaul,
Thank you for your question. The Audio Line Input is for connecting a device such as MP3 Player to play sound through the speaker but not used as an Audio Output for headphone or earphones.
A:AnswerIt uses batteries and also a wind up generator if no batteries or plug in outlet is available. I think AM and FM bands are available worldwide.
A:AnswerI have not put it to the test to see how long I need to wind it for but it also utilizes solar. I believe if u had rechargeable batteries it may recharge them but would take quite a bit if winding
A:AnswerI bought this for my Mom for Christmas and the ac adapter out of the box didn't work and when cranked it doesn't work either. I'm hoping we just got a defective unit.
Unfortunately I bought the unit around black friday and now it's January so the stores 30 day return has passed.