None that I have found so far, other than I wish I had this 35 years ago.
I have rotator cuff damage and the DEUS tips the scale at just over 2 pounds. It's a breeze to swing. I found a 10K Gold Jostens ladies class ring under a 3/8" dia x 1 1/2 galvanized steel bolt. The DEUS gave me 2 distinct tones. (1 very low and 1 very high) I had the reactivity set to 4 because it was an unknown area. Not many detectors will give you 2 different reading in the same hole!
I liked it so well, that I became a dealer.
The rings. Marked 925 is on the left, found at about 1" under the ground. Right is 10K Jostens girls class ring, found under a galvanized steel bolt. (Bolt was 2" under ground, ring about 4")