Two box machine?

[Monty]

I have seen several posts on "two box machines". I have a general idea what that means but can someone tell me why it might be better and more expenslve?

 

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[lonewolfe]

This is Garretts 2 box system,

Finds larger targets like a gallon sized can at the greatest possible depth while ignoring small trash items. With EagleEye front coil, provides accurate pinpointing and smaller object detection.
(15 feet to 18 feet. More depth on larger treasures.)

 

[stoney56]

Great for larger relics and deep caches. Bad for parks, kids might think you're gonna build a new jungle gym. LOL Used the old Fisher Gemini for short while- looked like a suitcase on a stick. HAHa. Seriously, they are mainly used by hard-core cache hunters not average MDers.