Don't know anything about the drug...or the delivery tool.
My wife (who's a lifetime type I) has used this
type tool to administer insulin on occasion, (pump not working...different type insulin etc.), but she uses an insulin pump 24/7-365 and has for a few decades now. Before that, it was individual syringes and many shots every day.
Here's one of the many links to info about it, just in case you haven't already looked it up, which is highly unlikely....
https://www.bydureon.com/home.html Without going into it in depth, it sounds like another version of glucophage, which is designed to help the body more properly utilize the insulin that it produces.
It is NOT insulin, it is a chemical (drug) that helps the body better distribute and use the insulin your pancreas makes.
As for the tool, it is another "user friendly" instrument that is supposed to make it easier for the patient to administer the drug.
Won't say more than that, other than to state the obvious...your doctor thinks it is the easiest/best way for you to deal with your current situation.
I'm sure I haven't said anything here that you didn't already know, so, sorry I can't really speak specifically to the subject as presented.
Just trying to help a little.
Be glad you weren't told you will have to take insulin!
As a sidenote...more than a few cases of type II and even some cases of type I, can be controlled by diet alone, but most folks are just not willing to make the lifestyle changes it would require.
Good luck and I hope somebody thoroughly familiar with the drug and the tool pipes in here to give you the in's and out's from first hand experience.
What ever happened to frontal lobe.....wasn't he an actual doctor? Even so, things being what they are today, if I were him, I probably wouldn't be giving any advice on an open internet forum either....even if I knew exactly what the answer was!

HAGO!