Check the listing for details. DT Systems Master Retriever MR 1100 Black Dog Remote Trainer MAXX-Range 360°. Color: Black, Condition: New, Made in Korea, Republic of. Listed at 189.99 USD. D.T. Systems MR 1100 Master Retriever Black Remote Trainer System DT Master Retriever MR 1100 Black Remote Trainer System DT, Dependable and Tough, and the DT Master Retriever 1100 is no exception. Built with rugged durability in mind for those long days in the marsh or field, the DT Master Retriever 1100 is ready for any and all conditions. Features 100% WATERPROOF Collar & Transmitter, 1,100 yard range, 16 levels of e-Stim, Vibration Assist mode, compact and lightweight design to handle anything you and your dog can dish out. Limited Lifetime Warranty: In addition to the one year warranty, many DT electronics are also covered by the D.T. Systems Premium Limited Lifetime Warranty. This warranty is the best warranty offered in the industry and is free to participating U.S.