It's kind of rubbery. not plastic

I am not certain of the material, but it is durable. You will not be disappointed

I believe the band itself is made of rubber, very flexible and comfortable to wear. I was confused at first, I thought the ends joined, the ends do not, the "spring" of the band holds it on the wrist. The Up bands come in different iterations, I have the second generation. The band can be worn in the shower, but should not be submerged. Make sure someone has an Apple product to have the app for it. (That is a major issue.)

The band has a rubber coating. There is a plastic cap that covers the part that plugs in, but I'm not sure what material it is specifically.

Yes includes 1 year warranty

Yes, they come new with a 1 year warranty. Best Buy also offers replacement plans through them as well.

yes - just ask for it and the sales clerk before paying will also offer the insurance

yes

yes i believe so

It should, I use it with my Samsung Tablet

I use mine with an older version of Android on my Galaxy Tab 10.1. It works fine but I find that when I plug the band in to the earphone jack I always have to restart the sync because the tablet indicates that the volume is too high. It works fine the second time but take a little longer to sync than it does on my phone.

Depends on the device. You'll have to check their website for those details.