I bought the ADS III back in 1983 and over the years it's taken some serious abuse and have used it for all types of hunting. I love it's depth ability, great ground tuning capability, no problems with fresh or salt water beaches. Yes it takes 6- 9 volt batteries and is a bit heavy, but getting deep signals is why I will never retire mine. Two years ago while hunting down Virginia beach I dug a coin that was a bit bigger then a quarter from around 16"deep,just a small flicker of a signal that got stronger as I went deeper,it was an old Hong Kong coin,such a treat. And I have to share a post I made today about Garrett customer service.
Now this is how CUSTOMER SERVICE should be; I hunt with a Garrett master hunter ADS III,bought it new in 1983 and it's been through a lot over the years. At some point the magnet part of the speaker broke off and came out,but since I always use headphones,no big deal. Recently my headphone jack stopped working,and I thought while I have the machine apart I would replace the speaker.So I called Garrett's customer service to see about a replacement or at least if they had the info on the speaker size/ohms and such. The phone rang 4 times before being answered by a REAL PERSON,very nice lady named Mary,I explained my problem and she put me on hold while she checked.No more then 2 minutes later she was back with not only the info about the speaker but she had found their supplier still carried that model and could have them send me one. Super,Great! And since it wasn't very expensive they would take care of the cost and just get it sent out to me FREE!!! I should have it in a week or so. NOW THATS CUSTOMER SERVICE!!!