What is the *******?

[Kendra]

Hawkeye.
What the heck is that thing and how to get it?

[PsychoMe]

Its kind of like binoculars, and you can combine it with the bow to get a sort of sniper rifle bow.

You buy it in Kakiriko from malo mart after a certain point in the game.

[Kendra]

witch point?

[eddydude]

the point after you have the bow and the kids tell you to use it

(you have to talk to the kid at the highest hill at the top of the highest house of kakariko, i think)