What You Need to Know before Buying a Detector
(Please read carefully)
Differences between a hobby detector and a professional detector
VLF Metal Detector
Pulse Induction Metal Detector
A Pulse Induction detector is an active apparatus whereas the VLF detectors (all detectors sold today are VLF unless labeled Pulse Induction) are not. VLF detectors, also known as “toy” or beach detectors are passive measuring apparatuses, which are only able to superficially record differences in conductivity or changes in the magnetic field in the ground (magnetic anomalies) due to the presence of hidden metals located close to the surface. The two-box detectors belong to the VLF category.
A Pulse Induction detector emits 500 to 1,000 strong electromagnetic signals per second, which penetrate deeply into the ground in order to temporarily energize various components in the ground (soil, stone, minerals, any present metals). This feature makes it an active apparatus. The presence of a metal in the ground causes a shift phase in the signal, which is then picked up and analyzed by the electronic apparatus and transformed into a signal tone indicating a target.
A “toy” or hobby detector of the VLF variety consumes about 30 to 40 milliamps/hour, which gives the user 40 to 80 hours of continuous use with a single battery so barely any power is being transmitted.  On the other hand, a good Pulse Induction detector uses 200 milliamps/hour (or more) and is able to send powerful electromagnetic waves into the ground. No big secret or mystery that it needs to have a powerful source of energy to power up the PI devices, thus they do consume quite a bit more energy than the VLF detectors.

A VLF cannot detect targets very efficiently if they are not within the first 10 or 12 inches of depth, on the other hand again, a PI detector sends pulsated waves into the ground at a depth of at least 10 feet and can locate the deepest of metal targets.
One may say to us: “Yes, but the VLF discriminates!” The truth is they can discriminate small iron objects very well, but have difficulty in tuning out the iron if it is much larger than a nail, small scrap or if the iron piece is of a certain shape. Here is a small list of the objects that a VLF cannot discriminate, and everyone can confirm it: large or small iron containers, an old lock, discarded or broken tools, large nails, horseshoes, ox shoes, mule shoes, balls or wads of iron wire, cans or containers of every sort, large iron trash, etc…etc.  With Deepers you are able to reject undesirable targets with 100% certainty within the first 20 inches of depth while preserving the capacity to locate gold, silver, or bronze coins and relics or a very deep buried cache with absolute precision.
Detecting gold?  The VLF detector is not very sensitive to gold simply because the electronics are not tuned to be sensitive to this metal. A large gold coin will not be detected at a depth of more than 6 to 8 inches.

Pulse Induction detectors normally process signals in a matter of microseconds with an average delay of 20 microseconds. Deepers engineers were able to lower the delay time to 10 microseconds, which makes it unbeatable in detecting the precious metals. This is important when searching for gold or silver targets because anything above 15 microseconds (delay) will cause a depth loss of 50% on gold and 30% on silver targets.
Gadgets or Performance; which do you prefer?
On our machines, we refuse to incorporate gadgets (bells and whistles), mere marketing tricks, which are not used for anything except for looks. Sound remains the basic and best form of information in detection: Detection of a target provokes a modulated sound, the REJET LED illuminates to indicate the rejection of iron objects within the first 20 inches of depth and another (LOW BAT) LED will alert the user when the battery is low. It is clear, simple, and powerful… Only efficiency matters to us!

Meters, video displays, LED screens…etc of all kinds and colors along with target analyzers, icons displays that show shape and makeup of the object, type of metal and depth of target ARE OF NO USE other than to market the product. The directional detectors (you know the long range ones that claim they can localize a remote treasure) are nothing more than a superb fraud. The manufacturer of those machines never offer a money back guarantee, all you can hope for is a list of things that you, the operator, are doing wrong. As for the new digital VLF detectors, we constantly perform tests on these “futuristic” machines and are able to confidently say that none of them perform according to the outrageous claims made by the manufacturers.

They do not distinguish copper from gold or brass from zinc or coins, they give completely nonsensical depths, and in the majority of cases the shapes of the indicated targets do not correspond to the shape of the actual target, and on top of everything else, you spend hours manipulating keys in the hope of understanding what is there. You are running the gadgets nonstop like you are playing a video game! None of the new and improved “futuristic” detectors are an actual improvement over the other. Oh yes, you may find a good machine out there (the top brands) but even they cannot consistently pick up any targets deeper than 12 inches deep. We have seen advertisements for Ground Penetrating Radar (GPR) for a modest and trifle $15,000 dollars along with first class exaggerations of its capabilities for deceiving an unfortunate buyer. 

Please do not fall for the advertising hype or marketing ploys, keep your feet on the ground. Ask the other experts, the successful ones, what they use. Ask them what unit is most used by professionals, what unit is powerful as well as affordable. Ask the manufacturer for proof of how well their detector works on targets in the ground and ask for their guarantee.
Believe us, when it comes to powerful detection of deeply buried metals
Nothing Beats a Good Pulse Induction Detector.