Looking for a manual for a MQP prospector IV metal detector

[Gold_Fever]

Just wondering if any one has a manual for this three knob prospector IV metal detector it has a sensitivity knob,a ground cancelation knob and a metal driscrimination knob, new to metal detecting bought it a a yard sale for 10 bucks already have found more than this in change but i had to find a lot of pull tabs and junk but i havnt found anything of real value yet anyone have any links to a manual site of just info on how to use it better than i am
Thanks