We have to remember that metal detecting is new to a lot of people in South Africa and most people have limited experience to their own detector or detectors . I find kellyco super store is one of the most experience and knowledge on any metal detectors , you can visit their website and choose any question from the list that they offer to their customers , they also have a list of all detectors and what they good for that will be help full . I used kellyco for the last 5 years very happy excellent service