- Searching for Gold Nuggets? - The ORX has a very easy to understand menu with 4 factory pre-set programs 2 Gold Prospecting and 2 Coin – All accessed by the simple press of a button. Two Gold Nugget Prospecting Modes Pre-Set: - Gold: For low to average mineralization, good sensitivity to medium and large sized Gold. - Fine Gold: For heavy mineralization with good sensitivity to small and medium sized Gold. - Also Includes two modes of 1. Coin Fast and 2. Coin Deep plus two free slots for User Defined Customizable Programs.