This was the highest tuned motion detector that C-Scope produced at one time. Based on the popular CS2MX but with an added meter (not I.D.) and a booster switch that could really add to the depth if the ground conditions allowed (same with the Treasure Baron, the Deep Hunter module wacked on the depth but also had to have an off position because on really bad ground it made things worse). Dual channel discrimination controls. Eight AA batteries.
C-Scope undercut Tesoro for instance in price and had the big plus with the upper range models of being rain and dust proof. The drawback with them was always lack of coil sizes and types. Usual thing would be a stock coil (10") and perhaps a 5".
Weight would be around 1.7 kg with batteries fitted. Weight balance was never right for me and there were better similar style Tesoro's if you paid more. My old Spectrum XLT felt lighter and worked better.
Sold in the U.S. under the Newforce label. You got five years warranty we only got two but they are very good with repairs and cheap compared to other manufacturers.A drawback is that you would have to send it back to the U.K. as I don't think you can get U.S. repairs anymore. Also a British CS4ZX was not the same as a U.S. CS4ZX !
One of the don't let the truth interfer with a good lie forums proudly says all C-Scope are rubbish and Discovery is C-Scope. Neither is true. The new(ish) and very cheap CS3MX is excellent, as is the CS4PI which is one of the cheapest pulse machines on the market.
Hope that helps...how are you finding the Garrett compared to what you already have ?