keep in mind the detector may be eratic for some time untill its brok in dont get hyper about sending it back , just be cool after a full charg it may beeb repetidly if you volume is past 2 keep that under 2 I say this because thats what mine did and some others had the same thing happen , and it may get static sounding after adjusting the gain it will calm down. bury a dime at 8" and 10" and just practice with settings, I can say the bliss can iggnore many hot rocks and clinker and still get targets under it thats one great thing about the bliss I have a hot rock that the bliss just gives a crackle on but if I put a coin under it it nails it so nice, I also found a chunk of coal clinker that set off one of my other detectors.- but the bliss ignors it and gets a coin under it really nice so you need not fear red brick . look forward to your upcoming great finds Gunnar