Check the listing for details. DT Systems - Master Retriever 1100 in Camo Pattern, One Size Fits Most. Condition: Used, Made in United States. Listed at 100.99 USD. The DT Systems Master Retriever 1100 in Camo Pattern is a remote training system designed for hunting enthusiasts. This waterproof and lightweight device operates on batteries and comes with a 1-year manufacturer warranty. With a range of 1100 yards (.625 miles), this item is perfect for training hunting dogs in the field. Made from durable plastic and weighing only 1.5 pounds, it is a reliable and convenient tool for improving your hunting experience.