After doing some research, it seems that my wife and I could buy a used Tab S without breaking our (limited) bank.

But we're unfamiliar with these gadgets and need to know if it would do what we want. Please excuse the dumb questions :-)

1) Its main purpose would be to sit on the ledge of a gym treadmill while I watch movies (avi, mkv, mp4). So the first question is -will it do this? The movies would be preloaded onto an SD or micro SD card, and I'd use either Bluetooth or regular headphones, whichever is best.

2) This also assumes that its battery would last for at least 1 -2 hours. Is this likely with a 2014 (?) device? Or do their batteries get tired with age as do laptops?

3) Lastly, we'd probably use the Tab as a backup device for accessing the internet in the evenings from a lounge chair. We both have laptops but I'm thinking we'd probably tend to pick up the Tab in preference, being smaller and lighter. So, would it patch into our (regular-type) broadband network?

Thanks for reading :-)